PSLE The bar graph shows the number of visitors to a zoo 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 176 more than the average number of visitors from Monday to Friday. If the number of visitors on Saturday was 560, how many visitors were there on Sunday?
(a)
Total number of visitors from Monday to Friday last week
= 220 + 360 + 740 + 200 + 360
= 1880
Average number of visitors from Monday to Friday last week
= 1880 ÷ 5
= 376
(b)
Average number of visitors on Saturday and Sunday
= 376 + 176
= 552
Total number of visitors on Saturday and Sunday
= 2 x 552
= 1104
Number of visitors on Sunday
= 1104 - 560
= 544
Answer(s): (a) 376; (b) 544