Question

Eclairs were bought at 11 for Rs 10 and sold at 10 for Rs 11. Find the gain or loss per cent.​

Answer 1

Answer:

21%

Step-by-step explanation:

C.P. of 11 Eclairs = Rs. 10,

C.P. of 1 eclairs  = Rs.1110 S.P. of 10 eclairs = Rs. 11

⇒ S.P. of 1 eclairs  = Rs.1011

∴ Profit % 11101011−1110×100=1110110121−100×100

=110×1021×11×100=21%

Answer 2

Answer:

LCM of 11 and 10 is 110.

CP of 11 eclairs= ₹10
CP of 1 eclairs= ₹10/11
Total CP= (₹10/11)×110 =₹100

Now, SP of 10 hair clips= ₹11
SP of 1 hair clip= ₹11/10
Total SP= (₹11/10)×110 =₹121

As, SP > CP, there is gain.

So, Gain= SP -CP
= ₹(121-100)
= ₹21

Now, Gain%= {(Gain/CP)×100)%
= {(21/100)×100}%
= 21%

Therefore, there is a gain of 21%