Question

A cake contains $\frac{1}{5}$ kg sugar, $\frac{2}{3}$ kg flour and $\frac{1}{6}$ kg butter. What is the total weight of the cake?

• A. $1\frac{1}{20}$ kg
• B. $1\frac{1}{30}$ kg
• C. $1\frac{1}{10}$ kg
• D. $1\frac{1}{15}$ kg

Answer 1

The correct option is B $1\frac{1}{30}$ kg

Weight of flour = $\frac{2}{3}$ kg
Weight of sugar = $\frac{1}{5}$ kg
Weight of butter = $\frac{1}{6}$ kg

Total weight of cake

$=\frac{2}{3}+\frac{1}{5}+\frac{1}{6}$
$=\frac{(2\times 10)+(1\times 6)+(1\times 5)}{30}$
$=\frac{20+6+5}{30}$
$=\frac{31}{30}$

$1\frac{1}{30}kg$