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### Primary 6 Problem Sums/Word Problems - Try FREE

- Percentage: If you understand this, you're awesome! > Percentage Exercise 8 - Percentage increase/decrease by > 1
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**Question
1 of 3**

The number of buses travelling on route A to the number of buses travelling on route B is in the ratio 1:3.

The number of buses on route A was increased by 80%.

(a) By what percentage must the number of buses on route B be decreased so that the same number of buses run on both routes?

(b) If the number of buses on route A increased by 500% from the original amount instead, by what percentage must the number of buses on route B be increased so that there are 20% more buses on route B than on route A?

* Notes to students:*

*If the question above has parts, (e.g. (a) and (b)), given that the answer for part (a) is 10 and the answer for part (b) is 12, give your answer as:10,12*

The correct answer is :

**40,140**