PSLE The bar graph shows the number of visitors to a 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 142 more than the average number of visitors from Monday to Friday. If the number of visitors on Sunday was 400, how many visitors were there on Saturday?
(a)
Total number of visitors from Monday to Friday last week
= 500 + 520 + 220 + 600 + 520
= 2360
Average number of visitors from Monday to Friday last week
= 2360 ÷ 5
= 472
(b)
Average number of visitors on Saturday and Sunday
= 472 + 142
= 614
Total number of visitors on Saturday and Sunday
= 2 x 614
= 1228
Number of visitors on Saturday
= 1228 - 400
= 828
Answer(s): (a) 472; (b) 828