Question

jyoti bought 4 pens for rs70 each .she sold 3of them at profit of 45% and the remaining pen at profit of 25%what is his overall profit percent​

Answer 1

Cp of 1 pen is rs 70. , cp of 4 pens = 70×4 = 280 rs

sp of 1 pen = ( 100 + gain % ) / 100 × cp

= (100 + 45) / 100 × 70

= 145/100×70

= 101 .5

so sp of 3 pens will be 101.5 × 3 = 304.5

on the other pen he gained 25 %

so,

sp = ( 100+25)/100×70 = 125/100×70 = 87.5

total sp = 304.5 + 87.5

= 392 rs

total profit = 392 - 280 = 112 rs

gain % = gain / cp × 100 = 112 / 280 × 100 = 40 %

ans . Therefore he gained 40 %

pls mark as the brainliest .

Answer 2

Answer:40%

Step-by-step explanation:C. P. of 3 pens =70×3rs=210&profit % = 45%

So S.P.= 210+45%×210 = 304.5rs profit % on last pen = 25%

So, S. P. = 70+25%×70 = 87.5rs

So, total S. P. = 304.5+87.5 = 392rs

So, net profit = total S. P. - total C. P.

= 392rs-280rs = 112rs

Profit percentage = profit /C. P. ×100

= 112×100÷280

=11200÷280

=40%