Question

The cost of an article is first decreased by 25% and then further decreased by 40%. Find the percentage change in the cost of the article.

Answer 1

Let the original cost = ₹100

Decreased by 25%

∴ New cost = 100 - 25 = ₹75

Decreased by 40%

= `(75 xx 40)/(100)` = ₹30

∴ New cost = ₹75 - 30 = ₹45

Overall change = 100 - 45 = ₹55

Required percentage

= `(55)/(100) xx 100`

= 55% decrease