Question

A can finish a job in 12 hours and B in 14 hours. A and B working alternatively, starting with A. If A earns Rs. 50 per hour, how
much does A earn through this job?
a Rs. 400
b. Rs. 250
C. Rs. 300
d. Rs. 350​

Answer 1

Answer:

The answer is R.s 350

,

Step-by-step explanation:

A's earns Rs. 350

Solution:

A's1 hour work =1/12

B's 1 hour work =1/14

A and b work together =1/12+1/14,

=>(7+6)'s 2 hours work =13/84,

A&b work alternatively l

So, (a+b)' s 2 hours =13/84

They work 6 pair of hours

Work =6*13/84=13/14

Remaining work =1-13/14=1/14

13th hour is A's turn

Total hour work by A=6+1 (to do 1/12)=7,A's earning amount = 50*7=R.s 350

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