PSLE The bar graph shows the number of visitors to a concert hall from Monday to Friday last week.
- What was the average number of visitors from Monday to Friday last week?
- The average number of visitors on Sunday and Saturday was 167 more than the average number of visitors from Monday to Friday. If the number of visitors on Sunday was 460, how many visitors were there on Saturday?
(a)
Total number of visitors from Monday to Friday last week
= 640 + 280 + 580 + 400 + 220
= 2120
Average number of visitors from Monday to Friday last week
= 2120 ÷ 5
= 424
(b)
Average number of visitors on Saturday and Sunday
= 424 + 167
= 591
Total number of visitors on Saturday and Sunday
= 2 x 591
= 1182
Number of visitors on Saturday
= 1182 - 460
= 722
Answer(s): (a) 424; (b) 722