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 187 more than the average number of visitors from Monday to Friday. If the number of visitors on Sunday was 360, how many visitors were there on Saturday?
(a)
Total number of visitors from Monday to Friday last week
= 320 + 230 + 180 + 280 + 220
= 1230
Average number of visitors from Monday to Friday last week
= 1230 ÷ 5
= 246
(b)
Average number of visitors on Saturday and Sunday
= 246 + 187
= 433
Total number of visitors on Saturday and Sunday
= 2 x 433
= 866
Number of visitors on Saturday
= 866 - 360
= 506
Answer(s): (a) 246; (b) 506