Question

A labour  works 40 hr per week and he earn Rs. 6400 as wages. If his per hour wages increase by 50% and duration of work reduced by 37.5%. find  the % change in his income.

A 6 (1/4)% decrease
B 6 (1/2)% increase
C 8 (2/3)% decrease
D 9 (1/11)% increase
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