| If a man earns Rs. 2000 for his first 50 h of work in a week and is then paid one and one half times his regular hourly rate for any additional hours, then the hours must he work to make Rs. 2300 in a week is |
A) 4 h
B) 5 h
C) 6 h
D) 7 h
Correct Answer: B
Solution :
| Rate of earning of the man \[=\frac{2000}{50}=\text{Rs}\text{. 40 per hour}\] |
| Rate of earning for additional hours |
| \[=40\times \frac{3}{2}=Rs.\,60\,\text{per}\,\text{hour}\] |
| Let the man has to work for n additional hours. Then, |
| \[2000+n\times 60=2300\] |
| \[\Rightarrow \] \[n\times 60=300\]\[\Rightarrow \]\[n=5\,h\] |
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