Question

quicktune pty. ltd. decided to keep records on the time (minutes) it takes to service cars.

time (mins) frequency
0 - 49 35
50 - 99 17
100 - 149 16
150 - 199 6
200 - 249 6
250 - 299 5

how many cars took less than 150 minutes to service?

Explanation:

Step1: Identify relevant frequency ranges

The relevant ranges are 0 - 49, 50 - 99, 100 - 149.

Step2: Sum up the frequencies

$35 + 17+16$
$= 68$

Answer:

68