Question

Some chocolates are bought at the rate of 11 for 10 and the same number at the
rate of 9 for 10. If the whole lot is sold at one rupee per chocolate, find the gain or
loss per cent on whole dealing​

Answer 1

Answer:

Let number of chocolate be =LCM(11,9)=99

cp of 99 chocolate=10/11×99=₹90

cp of 99chocolate=10/9×99=₹110

Total cp of 198 chocolate =90+110=₹200

Total so of 198 chocolate=198×1=₹198

since sp<cp,so ti is loss

loss=cp-sp

= 200-198

=₹2

Now,loss%=loss/cp×100

=2/200×100

=1%