Question

The hourly wages of a mason have increased by 25%. Since the increase, the number of hours he works daily has reduced by 16%. If he was earning Rs. 120 per day before the increase, how much (in Rs.) is he earning now?

1. Rs. 126
2. Rs. 150
3. Rs. 144
4. Rs. 120

Answer 1

Correct Answer - Option 1 : Rs. 126

Concept used:

Daily wages = hourly wages × work hours.

Calculation:

Let the original hourly wages and work hours be Rs. x and y hours respectively. 

Since he used to earn Rs. 120 earlier, xy = 120 

New hourly wages = Rs. (1.25x) and new working hours = 0.84y

New daily wages = (1.25x)(0.84y) = 1.05xy = 1.05 × 120 = Rs. 126

∴ New daily wages is Rs. 126