PSLE The bar graph shows the number of visitors to a tourist attraction 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 22 less than the average number of visitors from Monday to Friday. If the number of visitors on Saturday was 680, how many visitors were there on Sunday?
(a)
Total number of visitors from Monday to Friday last week
= 320 + 260 + 680 + 560 + 780
= 2600
Average number of visitors from Monday to Friday last week
= 2600 ÷ 5
= 520
(b)
Average number of visitors on Saturday and Sunday
= 520 - 22
= 498
Total number of visitors on Saturday and Sunday
= 2 x 498
= 996
Number of visitors on Sunday
= 996 - 680
= 316
Answer(s): (a) 520; (b) 316