The sum of three numbers is 144. If the numbers are in a ratio of 3:4:5, find the smallest number.
Show answer & explanation
Correct answer: A
Explanation
Given:
Ratio of three numbers = 3 : 4 : 5
Total sum = 144
Formula:
Numbers = 3x, 4x, 5x
3x + 4x + 5x = 144
12x = 144
x = 12
Numbers
= 3x = 3 × 12 = 36
= 4x = 4 × 12 = 48
= 5x = 5 × 12 = 60
Smallest number = 36