a calculator is sold at 25% discount with no loss no gain.thr seller gains 20% if he sells it at two successive discounts of 5% and d% .find the d%.
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Answer:
5.26%
Step-by-step explanation:
No profit no loss situation
∴ SP = CP = x and MP = y
SP is at 25% discount thus
x = 3/4y ______(1)
the seller gains 20%
6/5x
with 2 successive discounts
6x/5 = y x 1 - 5/100 x 1 - d/100
put value of x from equation (1)
6/5 x 3/4y = y x 95/100 x 100-d/100
18/20 = 19/20 x 100-d/100
18x20 x 20/19 x 100 = 100 - d
1800/19 - 100 = - d
94.8 - 100 = - d
d = 5.26
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