Start learning →

A school has 6000 for maths books at 40 each. If the price rises to 50, the number of books falls from 150 to:

A130
B140
C120
D100
Answer & Solution
Correct answer: C. 120
1. Price and number vary inversely. 2. 6000 divided by 50 is 120. 3. 40 times 150 equals 50 times 120. _Source: syllabus Mathematics, Chapter 13, Direct and Inverse Proportions._
Practise this question with Quill — CAT →

Keep practising Ratio and Proportion

Browse all Ratio and Proportion questions for CAT, or explore more Quantitative Aptitude topics.

Start a Ratio and Proportion lesson →