Question

Surbhi span 1/3 of her income on food, 2/5 of her income on paying rant and saves the remaining income. What part of her Income does she save?​

Answer 1

Answer:

let the savings be x

she span $\frac{1}{3}$ of her income on food

and paid $\frac{2}{5}$ of her income on rent

her total income be 1

so , saves + food + rant = 1

$x + \frac{1}{3} + \frac{2}{5} = 1 \\ = x + \frac{1 \times 5 + 2 \times 3}{15} = 1 \\ = x + \frac{5 + 6}{15} = 1 \\ = x + \frac{11}{15} = 1 \\ = x \: = 1 - \frac{11}{15} \\ = x = \frac{1 \times 15 - 11}{15} \\ = x = \frac{15 - 11}{15} \\ = x = \frac{4}{11} \\ so \:\frac{4}{11} \: are \: her \: savings \:$