A ball-bearing factory makes 4,000,000 ±5% ball bearings each day. Which option below represents the minimum and maximum number of ball bearings actually produced each day?
A) [3,600,000, 4,400,000]
B) [3,900,000, 4,100,000]
C) [3,800,000, 4,200,000]
D) [3,500,000, 4,500,000]

Question

Quizplus · Accepted Answer

The minimum number is 4,000,000 - 5% of 4,000,000 = 3,800,000, and the maximum number is 4,000,000 + 5% of 4,000,000 = 4,200,000.

A Ball-Bearing Factory Makes 4,000,000 ±5% Ball Bearings Each Day