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 Saturday and Sunday was 122 more than the average number of visitors from Monday to Friday. If the number of visitors on Saturday was 130, how many visitors were there on Sunday?
(a)
Total number of visitors from Monday to Friday last week
= 170 + 155 + 115 + 85 + 165
= 690
Average number of visitors from Monday to Friday last week
= 690 ÷ 5
= 138
(b)
Average number of visitors on Saturday and Sunday
= 138 + 122
= 260
Total number of visitors on Saturday and Sunday
= 2 x 260
= 520
Number of visitors on Sunday
= 520 - 130
= 390
Answer(s): (a) 138; (b) 390