A shopkeeper buys pens at the rate of ₹ 75 per 100. for how much should he sell each pen so as to make a gain of 15%? please help me ​

He should sell each pen of Rs.0.8625 so as to make a gain of 15%

Step-by-step explanation:

Gain=

SP = CP+Gain = 0.75+0.1125=0.8625

So, He should sell each pen of Rs.0.8625 so as to make a gain of 15%

#Learn more:

By selling 60 pens a shopkeeper gain the cp of 15 pen. If he bought 20 pens in rs36. Find the sp of one pen

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

(3x-8) or (3x+8)

step-by-step explanation: