Question

For every 3 cups of mango juice, 6 spoons of sugar is required. Calulate the number of spoons of sugar required to make 21 cups of mango juice using unitary method.

• A. $21$
• B. $63$
• C. $42$
• D. $14$

Answer 1

The correct option is C $42$

Given, for every 3 cups of mango juice, 6 spoons of sugar is required

Number of spoons of sugar required for one cup of juice $=\frac{\text{Total number of spoons of sugar required}}{\text{Number of cups}}=\frac{6}{3}=2$

Number of spoons of sugar required for 21 cups of juice $=\text{Number of spoons of sugar required for one cup of juice}\times \text{Number of cups}$
$=2\times 21$
$=42$