a) 4.5%
b) 6%
c) 7.5%
d) 8%
Answer: c
Explanation:
Let price at A = 100x
Then price at B = 85x → 15%
Discount
According to the question,
100x – (85x + 150) = 150
15x = 300
x = 20
Price at A = 100 × 20 = 2000
Price at B including travelling charges
= 85x = 150
= 85 × 20 + 150
= 1700 + 150
= 1850
$$\eqalign{
& {\text{Percentage profit }} \cr
& = \frac{{2000 – 1850}}{{2000}} \times 100 \cr
& = \frac{{150}}{{2000}} \times 100 \cr
& = 7.5\% \cr} $$
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