## Q&A - P5 Math

### Re: Q&A - P5 Math

Oh, got Q2 answer using guess and check as well.

Didn't know ratio also got this method.

Didn't know ratio also got this method.

### Re: Q&A - P5 Math

Please help with below question.

Thank you.

On a ship, 15% of the passengers were children. There were 3 times as many women as children. If there were 400 men, how many passengers were on board the ship?

Thank you.

On a ship, 15% of the passengers were children. There were 3 times as many women as children. If there were 400 men, how many passengers were on board the ship?

- Nebbermind
- KiasuGrandMaster
**Posts:**16474**Joined:**Tue Dec 22,**Total Likes:**165

### Re: Q&A - P5 Math

15% = 1.5U out of 10US_Mummy wrote:Please help with below question.

Thank you.

On a ship, 15% of the passengers were children. There were 3 times as many women as children. If there were 400 men, how many passengers were on board the ship?

3x as many = 4.5U

Children + Women = 6U (out of 10U)

Remainder (Men) = 4U = 400

Therefore 10U = 1000

No?

### Re: Q&A - P5 Math

Wow! you're very fast, Nebbermind.

Thank you very much.

The answer is correct, 1000 passengers.

Thank you very much.

The answer is correct, 1000 passengers.

### Re: Q&A - P5 Math

The number of boys who signed up for a swimming course was the same as the number of girls who signed up for the same course. 1/4 of the boys and 1/8 of the girls withdrew from the course. What fraction of the children withdrew from the course?

Ans: 3/16

TIA!

Ans: 3/16

TIA!

### Re: Q&A - P5 Math

Boys----> (---2u---)(---2u---)(-2u-----)(--2u----)Daddy D wrote:The number of boys who signed up for a swimming course was the same as the number of girls who signed up for the same course. 1/4 of the boys and 1/8 of the girls withdrew from the course. What fraction of the children withdrew from the course?

Ans: 3/16

TIA!

Girls----->(-u-)(-u-)(-u-)(-u-)(-u-)(-u-)(-u-)(-u-)

Total parts -> 16u (not 8u)

Withdraw is in red -> 2u+u = 3u

**Hence fraction withdrew -> 3/16**

- Nebbermind
- KiasuGrandMaster
**Posts:**16474**Joined:**Tue Dec 22,**Total Likes:**165

### Re: Q&A - P5 Math

No lah. I just lurk around and look out for easy ones to solve.S_Mummy wrote:Wow! you're very fast, Nebbermind.

Thank you very much.

The answer is correct, 1000 passengers.

### Re: Q&A - P5 Math

Need someone to help me check the following question if the answer is correct.

Henry had $5.

His sister had $16.

After their aunt gave each of them the same amount of money, Henry's sister had twice as

much as him.

How much money did their aunt give to each of them?

He [a](--5--)

<---1u-->

sis [a](----16--- )

<----2u------>

2u-1u=1u

1u= 16-5

=11

11-5 =6

is there an error?

Henry had $5.

His sister had $16.

After their aunt gave each of them the same amount of money, Henry's sister had twice as

much as him.

How much money did their aunt give to each of them?

He [a](--5--)

<---1u-->

sis [a](----16--- )

<----2u------>

2u-1u=1u

1u= 16-5

=11

11-5 =6

is there an error?

### Re: Q&A - P5 Math

You can check by substituting 6 into 6+5=11 and 6+16=22 and 22 is indeed twice of 11 so your answer is correct even if answer key is wrong.ozora wrote:Need someone to help me check the following question if the answer is correct.

Henry had $5.

His sister had $16.

After their aunt gave each of them the same amount of money, Henry's sister had twice as

much as him.

How much money did their aunt give to each of them?

He [a](--5--)

<---1u-->

sis [a](----16--- )

<----2u------>

2u-1u=1u

1u= 16-5

=11

11-5 =6

is there an error?

### Re: Q&A - P5 Math

Zann bought 600g of chicken and 1.4kg of mutton. Wayne bought 1.4kg of chicken and 600g of mutton. Zann paid $8.80 more than Wayne. 100g of chicken cost $1.25.

A) How much does 100g of mutton cost?

B) How much money did Zann spend?

TIA!

A) How much does 100g of mutton cost?

B) How much money did Zann spend?

TIA!