Question

A man spends 2/5^th of his salary on food, 3/10^th on house rent, and 1/8^th on other expenses. What fraction of his salary is still left with him?
1. \(\frac{8}{40}\)
2. \(\frac{6}{40}\)
3. \(\frac{7}{40}\)
4. \(\frac{9}{40}\)

Answer 1

Correct Answer - Option 3 : \(\frac{7}{40}\)

Given:

The man spends 2/5^th of his salary on food, 3/10^th on house rent, and 1/8^th on other expenses.

Calculation:

Let, the total salary of the man is 1 part

He spends 2/5^th of his salary on food, 3/10^th on house rent, and 1/8^th on other expenses

Overall expenditure is (2/5 + 3/10 + 1/8)

⇒ (16 + 12 + 5)/40

⇒ 33/40

Salary left with him is (1 – 33/40)

⇒ 7/40

∴ 7/40 fraction of his salary is still left with him.