Quantitative Aptitude – Arithmetic – Time and work


Slot – 2 – Quantitative Aptitude – Arithmetic – Time and work – John gets Rs 57 per hour of regular

Q. John gets Rs 57 per hour of regular work and Rs 114 per hour of overtime work. He works altogether 172 hours and his income from overtime hours is 15% of his income from regular hours. Then, for how many hours did he work overtime?

Answer: 12

Solution: let the number of overtime hours for john = x
So no regular hours = 172 –x
Income from overtime hours = (x)*114
Income from regular hours = (172-x)*57
Total income = 114x + (172 –x)*57 = 172*57 + 57x
As per question 15% of (172 – x) *57 = 114x
15/100 (172 +x)= 2x
15*172* – 15x = 200x
215x = 15*172
x = 12

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