PSLE The bar graph shows the number of visitors to a bird 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 Sunday and Saturday was 192 more than the average number of visitors from Monday to Friday. If the number of visitors on Sunday was 135, how many visitors were there on Saturday?
(a)
Total number of visitors from Monday to Friday last week
= 90 + 150 + 175 + 145 + 50
= 610
Average number of visitors from Monday to Friday last week
= 610 ÷ 5
= 122
(b)
Average number of visitors on Saturday and Sunday
= 122 + 192
= 314
Total number of visitors on Saturday and Sunday
= 2 x 314
= 628
Number of visitors on Saturday
= 628 - 135
= 493
Answer(s): (a) 122; (b) 493