10% of x more than x is what % less than 20% of 2x less than 2x .

Question

C with his 200% efficiency, can complete 25% of a certain work in 12 days.
B is 20% more efficient than C.
A with 75% efficiency can complete the work in same days as B.
If A and B together finish the same work and A gets Rs. 10400, then what is the share of B?

Answer 1

31.25%

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x+10%=1.1x
2x-20%=2*0.8x=1.6x
1.6x-1.1x=0.5x
0.5x/1.6x=0.3125=31.25%