Practice Algebra

What are the numbers?
There are three numbers whose sum is 96; the second is three times the first, and the third is four times the first. What are the numbers? Solution. Let x=first number, 3x=second number, 4x=third number. x + 3x + 4x=96 8x=90 x=12 3x=36 4x=48 The numbers are 12, 36, and 48. 1. A man bought a hat, a pair of boots, and a necktie for $7.50; the hat cost four times as much as the necktie, and the boots cost five times as much as the necktie. What was the cost of Read More...