PSLE The bar graph shows the number of visitors to a stadium 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 77 less than the average number of visitors from Monday to Friday. If the number of visitors on Sunday was 540, how many visitors were there on Saturday?
(a)
Total number of visitors from Monday to Friday last week
= 480 + 320 + 780 + 580 + 660
= 2820
Average number of visitors from Monday to Friday last week
= 2820 ÷ 5
= 564
(b)
Average number of visitors on Saturday and Sunday
= 564 - 77
= 487
Total number of visitors on Saturday and Sunday
= 2 x 487
= 974
Number of visitors on Saturday
= 974 - 540
= 434
Answer(s): (a) 564; (b) 434