A can do a piece of work in 3 days while B can do the same

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A can do a piece of work in 3 days while B can do the same work in 4 days. If they work together for a total wages of ₹ 2800. how much does A get?

1. ₹ 1200
2. ₹ 1900
3. ₹ 1300
4. ₹ 1600
5. None of the above

Correct Option: D

A's 1 day's work = 1/3
B's 1 day's work = 1/4
A's share : B's share
= (1/3) : (1/4) = (4/12) : (3/12)
= 4 : 3
A's share = (4/7) x 2800
= 4 x 400
= ₹ 1600