How Many Girls Can Swim in a School of 2100 Pupils?

[t3rom]

Kindly check this math.

A. Homework Statement :

Q1. There are 2100 pupils in a school. 1/3 of the pupils are girls. 2/5 of the girls can swim. How many girls can swim?

Q2. 5 Whole 2 hundredths=?

Q3. 3 Whole 8 tenths= ?B. The attempt at a solution

Ans1:

2100 x 1/3= 700
700 x 2/5 =280

280 girls can swim

Ans2: 5 Whole x 0.02 = 5.02
Ans3: 3 Whole x 0.8 = 3.8

Thanks in advance!

 

[Fredrik]

1. looks good.

2. "five and two hundredths" is $5+\frac{2}{100}$. That x you wrote looks like a multiplication symbol. Your result is correct, but unless you were asked to answer in decimal form, the answer should be a fraction. (An answer in decimal form makes the reader think that maybe the answer has been rounded off).

3. See 2.

 

[jedishrfu]

Question 1 looks right.

Question 2 and 3, what do they mean by 3 whole? Is that like I have 3 pies and now I want 8 tenths of them?

In that case it's 3x0.8 as you wrote but the answer isn't 3.8 as you've added .8 to the 3 not multiplied by .8

 

[Mark44]

Question 1 looks right.

Question 2 and 3, what do they mean by 3 whole? Is that like I have 3 pies and now I want 8 tenths of them?

In that case it's 3x0.8 as you wrote but the answer isn't 3.8 as you've added .8 to the 3 not multiplied by .8

The OP miswrote -- it should be 3 + 0.8

 

[jedishrfu]

Hi Mark44, thanks for the correction, I didn't understand the terminology of 3 whole 8 tenths and thought it was something else.