Question

12.5℅ more is gained by selling a pen for ₹88 instead of selling for ₹80. find the cp of pen​

Answer 1

Answer:

The cost price of pen is Rs.64

Step-by-step explanation:

Let C.P of pen  be Rs x

When S.P is RS.88 then,

Profit % =(profit / C.P) × 100

            = { ( 88 - x ) /x } × 100     (profit = S.P - C.P)

When S.P is Rs.80 then,

Profit % = { ( 80 - x ) / x } × 100

Hence more profit % gain = { ( 88 - x ) / x } × 100 - { ( 80 - x ) / x } × 100

According to question,

12.5 = {88 - x - 80 + x } × ( 100 / x)

12.5 × x =8 × 100

x = 800 / 12.5

x = 64

Answer 2

Answer:

Profit=SP-CP=88-CP

PROFIT%=PROFIT-CP/CP×100

12.5=88-CP/CP×100

12.5 CP=(88-CP)×100

12.5 CP=88×100CP

12.5 CP=8800-100CP

12.5 CP+100CP=8800

112.5CP=8800

CP=8800/112.5=78.22

CP=78.22