If anyone's good at maths. (Yeah, I'm desperate.)

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If anyone's good at maths. (Yeah, I'm desperate.)

Post by Single H on Thu Jan 12, 2012 6:03 am

Using Direct Proportion

1) James went on holiday to America. He changed £320 into dollars. The exchange rate was £1 = $1.60. Work out how many dollars James got.

2) Jasmin bought an MP3 player in America for $130, the exchange rate was £1 = $1.64. Work out the cost of the MP3 player in pounds correct to the nearest penny.

3) The cost of material is directly proportional to it's length. 1.5 m of material costs £9.60. How much will 5 m of material cost?

Using Inverse Proportion

1) It takes 3 men 4 days to cut a hedge.

a) How long would it take 1 man to complete the job?

Work out how long it will take to cut the same hedge if there are.

b) Two men.

c) Six men

2) It takes 8 cleaners 4 hours to clean a school.

a) How long would it take 1 cleaner to clean the school?

Work out how long it would take to clean the same school if there were.

b) 16 cleaners

c) 4 cleaners

d) 2 cleaners

3) A factory uses 5 machines to complete a job in 12 hours. How long would it take to complete the job if there were:

a) 4 machines

b) 6 machines

4) It takes 4 builders 6 days to build a wall. How long will it take:

a) 2 builders.

b) 3 builders.

c) 6 builders.

d) 12 builders.

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Re: If anyone's good at maths. (Yeah, I'm desperate.)

Post by Guest on Thu Jan 12, 2012 6:44 am

I'd help if math wasn't such a bitch.

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Re: If anyone's good at maths. (Yeah, I'm desperate.)

Post by Kane on Thu Jan 12, 2012 9:12 pm

What the fuck, Jake? Seriously? You can't do elementary school math? I am disappoint... Anyway, idk if you want the steps, but I'm too lazy to write the steps, so imma give you the direct answers. If you need steps, I'll try to do them later, I gotta study physics and Arabic.

Single H wrote:Using Direct Proportion

1) James went on holiday to America. He changed £320 into dollars. The exchange rate was £1 = $1.60. Work out how many dollars James got.

512$

2) Jasmin bought an MP3 player in America for $130, the exchange rate was £1 = $1.64. Work out the cost of the MP3 player in pounds correct to the nearest penny.

idk how much a penny is off a pound, so Imma give you the first three numbers after the dot (yea, we call it dot. Decimele is too unmathy of a word) 79.268 If 100pennies are 1 pound then it would be 79.27 etc

3) The cost of material is directly proportional to it's length. 1.5 m of material costs £9.60. How much will 5 m of material cost?

32

Using Inverse Proportion

1) It takes 3 men 4 days to cut a hedge.

a) How long would it take 1 man to complete the job?

12 days

Work out how long it will take to cut the same hedge if there are.

b) Two men.

6 days

c) Six men

2 days

2) It takes 8 cleaners 4 hours to clean a school.

a) How long would it take 1 cleaner to clean the school?

32 hours

Work out how long it would take to clean the same school if there were.

b) 16 cleaners

2 hours

c) 4 cleaners

8 hours

d) 2 cleaners

16 hours

3) A factory uses 5 machines to complete a job in 12 hours. How long would it take to complete the job if there were:

a) 4 machines

15 hours

b) 6 machines

10 hours

4) It takes 4 builders 6 days to build a wall. How long will it take:

a) 2 builders.

12 days

b) 3 builders.

8 days

c) 6 builders.

4 days

d) 12 builders.

2 days
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Re: If anyone's good at maths. (Yeah, I'm desperate.)

Post by Guest on Thu Jan 12, 2012 9:32 pm

This is like the time I helped B00Bz with his science homework.

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Re: If anyone's good at maths. (Yeah, I'm desperate.)

Post by Single H on Fri Jan 13, 2012 2:49 am

Nawakhtha wrote:What the fuck, Jake? Seriously? You can't do elementary school math? I am disappoint... Anyway, idk if you want the steps, but I'm too lazy to write the steps, so imma give you the direct answers. If you need steps, I'll try to do them later, I gotta study physics and Arabic.

Single H wrote:Using Direct Proportion

1) James went on holiday to America. He changed £320 into dollars. The exchange rate was £1 = $1.60. Work out how many dollars James got.

512$

2) Jasmin bought an MP3 player in America for $130, the exchange rate was £1 = $1.64. Work out the cost of the MP3 player in pounds correct to the nearest penny.

idk how much a penny is off a pound, so Imma give you the first three numbers after the dot (yea, we call it dot. Decimele is too unmathy of a word) 79.268 If 100pennies are 1 pound then it would be 79.27 etc

3) The cost of material is directly proportional to it's length. 1.5 m of material costs £9.60. How much will 5 m of material cost?

32

Using Inverse Proportion

1) It takes 3 men 4 days to cut a hedge.

a) How long would it take 1 man to complete the job?

12 days

Work out how long it will take to cut the same hedge if there are.

b) Two men.

6 days

c) Six men

2 days

2) It takes 8 cleaners 4 hours to clean a school.

a) How long would it take 1 cleaner to clean the school?

32 hours

Work out how long it would take to clean the same school if there were.

b) 16 cleaners

2 hours

c) 4 cleaners

8 hours

d) 2 cleaners

16 hours

3) A factory uses 5 machines to complete a job in 12 hours. How long would it take to complete the job if there were:

a) 4 machines

15 hours

b) 6 machines

10 hours

4) It takes 4 builders 6 days to build a wall. How long will it take:

a) 2 builders.

12 days

b) 3 builders.

8 days

c) 6 builders.

4 days

d) 12 builders.

2 days

Amg, Matt I love you. I seriously owe you one.

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