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 Saturday and Sunday was 150 more than the average number of visitors from Monday to Friday. If the number of visitors on Saturday was 280, how many visitors were there on Sunday?
(a)
Total number of visitors from Monday to Friday last week
= 260 + 150 + 160 + 250 + 110
= 930
Average number of visitors from Monday to Friday last week
= 930 ÷ 5
= 186
(b)
Average number of visitors on Saturday and Sunday
= 186 + 150
= 336
Total number of visitors on Saturday and Sunday
= 2 x 336
= 672
Number of visitors on Sunday
= 672 - 280
= 392
Answer(s): (a) 186; (b) 392