In May Mrs. Lee's earnings were 60 percent of the Lee family's total income. In June Mrs. Lee earned 20 percent more than in May. If the rest of the family's income was the same both months, then, in June, Mrs. Lee's earnings were approximately what percent of the Lee family's total income?

(A) 64%

(B) 68%

(C) 72%

(D) 76%

(E) 80%

I did this some times, but anytime I redid, I always come to the trap!

L is Lee's earings, T is family'income

In May: L = 0.6*T

In June: L=1.2*0.6*T =0.72*T

Divide both sides by T, L/T=0.72. so C

Can you help me out what wrong with my reasonings above? Thanks!

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