The income of A is 50% more than that of B. If the income of A is increased by 40% and the income of B is increased by 90% , then the percentage increase in their combined income will be.
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Step-by-step explanation:
Let the income of b be 100x therefore income of a which is 50% greater than that of b is (100+50%*100)=150
Initial combined income of a and b 100 +150=250
Now income of a is increased by 40
40%*150+150=60+150=210
Increase in b income =(90%100+100=90+100=190)
New combined income of a and b =(210+190=400)
Increase =[(new-old) /old ]*100
(400-250)/250*100
=60% change(answer)
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