Question

A survey asked a group of adults and youths if they prefer reading books printed on paper or electronic books. Results are shown in the table below, but some values are missing. Fill in the missing values.
Book Preference
Age Group Print Electronic Total
Youths
63
Adults 23
59
Total 46

Answer 1

Filled table:

Age Group | Print | Electronic | Total
- Youths | 23 | 63 | 86
- Adults | 23 | 36 | 59
- Total | 46 | 99 | 145

Reason: Total print = 46 and adults print = 23 → youths print = 46−23 = 23. Youths total = 23+63 = 86. Overall total = 86+59 = 145. Electronic total = 145−46 = 99, so adults electronic = 99−63 = 36.