PSLE A florist sold flowers from 08 00 to 16 00 last Monday. The line graph shows the total number of flowers sold from 08 00.
- At what time had the florist sold one-fifth the total number of flowers sold that day?
- During which one-hour interval was there no flower sold? Give your answer in the following format (Eg 09 00 to 10 00)
- What was the average number of flowers sold per hour from 11 00 to 15 00?
(a)
Total number of flowers sold = 170
One-fifth the number of flowers sold
=
15 x 170
= 34
Time that the florist took to sell one-fifth the total number of flower: 10 00
(b)
Between 12 00 to 13 00, there was no flowers sold.
(c)
Number of flowers sold by 11 00 = 61
Number of flowers sold by 15 00 = 113
Duration from 11 00 to 15 00 = 4 h
Average number of flowers sold per hour from 11 00 to 15 00
= (113 - 61) ÷ 4
= 52 ÷ 4
= 13
Answer(s): (a) 10 00; (b) 12 00 to 13 00; (c) 13