Question

Q.10 Cotter pins are bought 10
for a rupee. how many for a
rupee should these be sold to
gain 25%?​

Answer 1

Answer:

4 cotter pins

Step-by-step explanation:

CP of 10 cotter pins = ₹1 = 100 paise

CP of 1 cotter pin = 100/10 = 10 paise

Gain % = 25%

Gain = 25/100×10 paise

Gain = 2.5 paise

SP of 1 cotter pin = 20+2.5 = 22.5paise

SP of 4 cotter pins = 25×4.44 = 100paise = ₹1

So, approximately 4 cotter pins should be sold for a rupee to gain 25%.