# A Shopkeeper Sells One Transistor for ₹ 840 at a Gain of 20% and Another for ₹ 960 at a Loss of 4%. His Total Gain Or Loss Percent is - Mathematics

MCQ

A shopkeeper sells one transistor for ₹ 840 at a gain of 20% and another for ₹ 960 at a loss of 4%. His total gain or loss percent is

#### Options

• 5 15/17%loss

• 5 15/17%gain

• 6 2/3%gain

• None of these

#### Solution

5 15/17%gain

Explanation :
SP of first transistor = ₹ 840
Gain%= 20%

∴ CP of the first transistor = 100/(100+20)xx840

= 100/120xx840 = ₹ 700

Again, SP of the second transistor = 960
Loss% = 4%

∴ CP of the second transistor = 100/(100-4%)xx960

= 100/96xx960 = ₹ 1000

∴ Total SP = 840 + 960 = ₹ 1800

and total CP = 700 + 1000 = ₹ 1700

Hence,
gain % = (1800-1700)/1700xx100

= 100/17 = 5 15/17%

Concept: Profit and Loss (Entrance Exam)
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