Question

Some lollipops are bought at 11 for a rupee and an equal number of other lollipops at 9 rupee. if the whole lot is sold at 10 a rupee, find the gain or loss percent.
PLEASE ANSWER

Answer 1

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Here's your answer...

Let the number of lollipops bought in each case be 99.
(I chose this number because it is much more convenient to divide with 9 and 11. Its also their LCM)
The cost for the first batch of lollipops is 99/11 = ₹9
The cost for the second batch of lollipops is 99/9 = ₹11
Total CP = ₹20
Total number of lollipops = 99+99 = 198
SP = 198/10 = ₹19.8
SP<CP so its a loss
loss% = loss/CP × 100
= 0.2/20 × 100
= 0.2×5 = 1%

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