PSLE A florist sold flowers from 12 00 to 20 00 last Sunday. The line graph shows the total number of flowers sold from 12 00.
- At what time had the florist sold one-quarter 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 15 00 to 19 00?
(a)
Total number of flowers sold = 200
One-quarter the number of flowers sold
=
14 x 200
= 50
Time that the florist took to sell one-quarter the total number of flower: 14 00
(b)
Between 16 00 to 17 00, there was no flowers sold.
(c)
Number of flowers sold by 15 00 = 67
Number of flowers sold by 19 00 = 131
Duration from 15 00 to 19 00 = 4 h
Average number of flowers sold per hour from 15 00 to 19 00
= (131 - 67) ÷ 4
= 64 ÷ 4
= 16
Answer(s): (a) 14 00; (b) 16 00 to 17 00; (c) 16