PSLE A florist sold flowers from 10 00 to 18 00 last Monday. The line graph shows the total number of flowers sold from 10 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 13 00 to 17 00?
(a)
Total number of flowers sold = 200
One-fifth the number of flowers sold
=
15 x 200
= 40
Time that the florist took to sell one-fifth the total number of flower: 12 00
(b)
Between 14 00 to 15 00, there was no flowers sold.
(c)
Number of flowers sold by 13 00 = 65
Number of flowers sold by 17 00 = 125
Duration from 13 00 to 17 00 = 4 h
Average number of flowers sold per hour from 13 00 to 17 00
= (125 - 65) ÷ 4
= 60 ÷ 4
= 15
Answer(s): (a) 12 00; (b) 14 00 to 15 00; (c) 15