PSLE For a recycling project, Jenson collected 16 glass bottles, Sam collected 2
d glass bottles and Ben collected 4 +
d glass bottles.
- How many more glass bottles did Sam collect than Ben?
- How many glass bottles did the 3 boys collect altogether?
(a)
Number of glass bottles that Sam collected more than Ben
= 2
d - (4 +
d)
= 2
d -
d - 4
=
d - 4
(b)
Total number of glass bottles that the 3 boys collected
= 16 + 2
d + 4 +
d = 16 + 4 + 2
d +
d = 20 + 3
d Answer(s): (a)
d - 4; (b) 20 + 3
d