1.  In a regular week, there are 5 working days and for each day, the working hours are 8. A man gets ₹ 2.40 per hour for regular work and ₹ 3.20 per hours for overtime. If he earns ₹ 432 in 4 weeks, then how many hours does he work for ?
A. 160
B. 175
C. 180
D. 195

Answer: Option B

Explanation:

Suppose the man works overtime for x hours.

Now, working hours in 4 weeks = (5 x 8 x 4) = 160.

160 x 2.40 + x x 3.20 = 432

3.20x = 432 - 384 = 48

x = 15.

Hence, total hours of work = (160 + 15) = 175.