Ratio & Fraction of Amounts

Find

 $\frac{1}{5}$  of 240

Find

 $\frac{3}{8}of\ 64$  

Find

 $\frac{7}{10}of\ 250$  

Find

 $\frac{17}{50}\ of\ 8500$  

The ratio of boys to girls in a class is 3:2.

What fraction of the class are girls?

• $\frac{2}{3}$

• $\frac{3}{5}$

• $\frac{2}{5}$

• $\frac{3}{2}$

The ratio of water, sand and cement needed to make concrete is 5:3:1.

What fraction of the mixture is sand?

• $\frac{3}{8}$

• $\frac{3}{5}$

• $\frac{1}{2}$

• $\frac{1}{3}$

Chris and Amanda share £400 in the ratio 2:3.

How much does Amanda receive?

Bill and Ben share 80 sweets between themselves in the ratio 3:7.

Ben gives half of his sweets to Clare.

How many sweets doe Clare get?

 $Chris\ wins\ £60000.$  

 $He\ gives\ \frac{2}{5}\ to\ his\ brother\ Matthew.$  
He shares it between his children in the ratio 3:2:1.
What is the biggest share that one child will get?

There are 90 beads in a bag split between red and blue in the ratio 5:4.
 $\frac{3}{5}$  of the red beads have stripes.

 $\frac{7}{10}$  of the blue beads have stripes.
How many beads in total do not have stripes?