PSLE The bar graph shows the number of visitors to a concert hall 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 130 more than the average number of visitors from Monday to Friday. If the number of visitors on Sunday was 290, how many visitors were there on Saturday?
(a)
Total number of visitors from Monday to Friday last week
= 110 + 320 + 380 + 170 + 300
= 1280
Average number of visitors from Monday to Friday last week
= 1280 ÷ 5
= 256
(b)
Average number of visitors on Saturday and Sunday
= 256 + 130
= 386
Total number of visitors on Saturday and Sunday
= 2 x 386
= 772
Number of visitors on Saturday
= 772 - 290
= 482
Answer(s): (a) 256; (b) 482