Correct Answer - Option 3 : 10%

**Given **

Suresh's income is less than Ekram income = 30%

Raju's income is less than Ekram income = 37%

**Formula Used **

Percentage = (Actual/Total) × 100

**Calculation **

Let the Ekram Income be 100x

Suresh's income = 100x - 30% of 100x = 70x

Raju's income = 100x - 37% of 100x = 63x

Raju's income is less than Suresh income = 70x - 63x = 7x

Percentage Raju's income is less than suresh income = (7x/70x) × 100 = 10%

**∴ Raju's income is less than suresh income by 10% **