Question

some lollipops are bought at 11 for a Rupee and an equal number of other lollipops at 9 Rupees the whole lot is sold at 10 rupees find the gain or loss percent​

Answer 1

Answer:

LCM of 9,10 and 11=990.

So, let us assume that 990 lollipops of each kind are bought.

Now C.P. of 990 lollipops of first kind =(

11

1

×990)= Rs. 90

C.P. of 990 lollipops of second kind = Rs.(

9

1

×990)= Rs. 110

S.P. of 1980 lollipops = Rs. (

10

1

×1980)= Rs. 198

Total C.P. = Rs. 90+ Rs. 110 Rs. 200 ....∵ C.P. > S.P.,

Loss = Rs. 200− Rs. 198= Rs. 2

∴ Loss %

C.P.

Loss

×100=

200

2

×100=1% is right answer