Question

by selling a jug for rs. 144 , a men loses 1/7 of his outlay . if it is sold for 189, what is the gain percent.

Answer 1

Let C.P. = Rs. P 
S.P. = (C.P.) - (Loos) = P - P/7 = Rs. 6P/7
∵ 6P / 7 = 144
∴ P = (144 x 7) / 6 = Rs. 168
Hence, no Loss and no gain.

Answer 2

Answer:

Gain percent is 12.5%

Step-by-step explanation:

Given,

S.P. of the jug = rs. 144

Also,

He loses 1 / 7 of his outlay on this price

According to question,

New S.P. = 189

So,

Let C.P. be Rs. x

Loss = x * 1 / 7

Loss = x / 7

We know,  

S.P. = C.P - Loss

144 = x - x / 7

144 = 7x - x / 7

144 =  6x / 7

Multiplying both sided by 7

144 * 7 = 6x

1008 = 6x

Dividing both sides by 6

1008 / 6 = 6x / 6

168 = x

Hence,

C. P = rs 168

Since,

S.P = rs 189

Profit = SP - CP

Profit = 189 - 168

Profit = 21

Profit % = $\frac{Profit}{CP}$ * 100

Profit % = $\frac{21}{168}$ * 100

Profit % = 12.5%

Hence,

Gain percent is 12.5%