PSLE The bar graph shows the number of visitors to a bird 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 Sunday and Saturday was 87 more than the average number of visitors from Monday to Friday. If the number of visitors on Sunday was 330, how many visitors were there on Saturday?
(a)
Total number of visitors from Monday to Friday last week
= 100 + 370 + 160 + 350 + 390
= 1370
Average number of visitors from Monday to Friday last week
= 1370 ÷ 5
= 274
(b)
Average number of visitors on Saturday and Sunday
= 274 + 87
= 361
Total number of visitors on Saturday and Sunday
= 2 x 361
= 722
Number of visitors on Saturday
= 722 - 330
= 392
Answer(s): (a) 274; (b) 392