If A's income is 60% more than B's income and B's income is 40% less than C's…
2020
If A's income is 60% more than B's income and B's income is 40% less than C's income, then by what percent is C's income more than A's income? (Correct to one decimal place)
Answer: D. 4.2 — Let C's income = 100 (take a convenient base). B is 40% less than C, so B = 100 - 40% of 100 = 60. A is 60% more than B, so A = 60 + 60% of 60 = 60 x 1.6 =…
- A.
7.6
- B.
6.8
- C.
2.4
- D.
4.2
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Correct answer: D
Let C's income = 100 (take a convenient base).
B is 40% less than C, so B = 100 - 40% of 100 = 60.
A is 60% more than B, so A = 60 + 60% of 60 = 60 x 1.6 = 96.
C is more than A by (C - A) = 100 - 96 = 4.
Required percent = (4 / A) x 100 = (4 / 96) x 100 = 4.1666... ~= 4.2%.
Hence, C's income is about 4.2% more than A's income.
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