Question

In a super market, the cost of a table lamp is $870, on which 1/5th is off . The same table lamp is available at an electric shop for $920 with a discount of 1/10th . From where should one buy the lamp? what is the difference in prices?

Answer 1

Answer:

C

1

=870 , Discount

1

=

5

1

th

of870

C

2

=975 , Discount

2

=

15

1

th

of975

Selling Price =CP−Discount×CP

SP

1

=870−

5

1

×870=696

SP

2

=975−

15

1

×975=910

Therefore the Better deal is Diwali Sale, by (910−696)=Rs214

Answer 2

Explanation:

1st case cost

870-(1/5×870)=696

2nd case cost

920-(1/10×920)=828

clearly we can see 1st case cost is the best estimate

the difference is 828-696=132