PSLE The bar graph shows the number of visitors to a safari 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 77 more than the average number of visitors from Monday to Friday. If the number of visitors on Sunday was 270, how many visitors were there on Saturday?
(a)
Total number of visitors from Monday to Friday last week
= 380 + 290 + 260 + 340 + 360
= 1630
Average number of visitors from Monday to Friday last week
= 1630 ÷ 5
= 326
(b)
Average number of visitors on Saturday and Sunday
= 326 + 77
= 403
Total number of visitors on Saturday and Sunday
= 2 x 403
= 806
Number of visitors on Saturday
= 806 - 270
= 536
Answer(s): (a) 326; (b) 536