PSLE A florist sold flowers from 12 00 to 20 00 last Wednesday. The line graph shows the total number of flowers sold from 12 00.
- At what time had the florist sold one-third 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 14 00 to 19 00?
(a)
Total number of flowers sold = 198
One-third the number of flowers sold
=
13 x 198
= 66
Time that the florist took to sell one-third the total number of flower: 15 00
(b)
Between 17 00 to 18 00, there was no flowers sold.
(c)
Number of flowers sold by 14 00 = 54
Number of flowers sold by 19 00 = 129
Duration from 14 00 to 19 00 = 5 h
Average number of flowers sold per hour from 14 00 to 19 00
= (129 - 54) ÷ 5
= 75 ÷ 5
= 15
Answer(s): (a) 15 00; (b) 17 00 to 18 00; (c) 15