Question

To make a chocolate cake, sudha requires 1 1/2 kg of maida, 3/5 kg of sugar and 1/20 kg of coco powder. Find the weight of the mixture when these three ingredients are mixed together ​

Answer 1

Sudha used 1 $\frac{1}{2}$ kg of maida, $\frac{3}{5}$ kg of sugar and $\frac{1}{20}$ kg of coco powder.

To find: weight of the mixture of these ingredients.

Weight = 1 $\frac{1}{2}$ + $\frac{3}{5}$ + $\frac{1}{20}$

Here 1 $\frac{1}{2}$ is a mixed fraction. Converting it into an improper fraction, $\frac{1x2}{2}$ + $\frac{1}{2}$ which is $\frac{2+1}{2}$ = $\frac{3}{2}$

So, weight = $\frac{3}{2}$ + $\frac{3}{5}$ + $\frac{1}{20}$

LCM = 20

= $\frac{3x10}{2x10}$ + $\frac{3x4}{5x4}$ + $\frac{1}{20}$

= $\frac{30}{20}$ + $\frac{12}{20}$ + $\frac{1}{20\\}$

= $\frac{43}{20}$

WEIGHT OF THE MIXTURE:

Improper fraction = $\frac{43}{20}$

Mixed fraction = 2 $\frac{3}{20}$