# John gets Rs 57 per hour of regular | Quantitative Aptitude - Arithmetic – Time and work

## CAT 2019 - Slot 2 - Quantitative Aptitude - Time and work - Question 5 - John gets Rs 57 per hour of regular

Q. 5: 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?

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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