PSLE The bar graph shows the number of visitors to a park 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 Saturday and Sunday was 150 more than the average number of visitors from Monday to Friday. If the number of visitors on Saturday was 170, how many visitors were there on Sunday?
(a)
Total number of visitors from Monday to Friday last week
= 135 + 80 + 190 + 145 + 65
= 615
Average number of visitors from Monday to Friday last week
= 615 ÷ 5
= 123
(b)
Average number of visitors on Saturday and Sunday
= 123 + 150
= 273
Total number of visitors on Saturday and Sunday
= 2 x 273
= 546
Number of visitors on Sunday
= 546 - 170
= 376
Answer(s): (a) 123; (b) 376