PSLE Look at the graph and answer the following questions.
- How many notebooks did the shop sell in September?
- The number of notebooks sold in November was an 80% increase from the number sold in October. How many notebooks were sold in November?
(a)
Number of notebooks sold in September = 5
(b)
Total number of notebooks sold in November as compared to October
= 100% + 80%
= 180%
100% → 50
1% → 50 ÷ 100 = 0.5
180% → 180 x 0.5 = 90
Number of notebooks sold in November = 90
Answer(s): (a) 5; (b) 90