Adam has some paint.
He uses
45 of it to paint 6 tables and 9 desks.
The amount of paint needed to paint a desk is 2 times that of a table.
- How many tables can he paint using the remaining paint?
- How many desks can he paint using the remaining paint?
|
Tables |
Desks |
Number |
6 |
9 |
Value |
1 u |
2 u |
Total value |
6 u |
18 u |
(a)
Paint needed for 1 table = 1 u
Paint needed for 1 desk = 2 u
Paint needed for 6 tables and 9 desks
= 6 x 1 u x 9 x 2 u
= 6 u + 18 u
= 24 u
45 of the paint = 24 u
15 of the paint = 24 u ÷ 4 = 6 u
Fraction of the remaining paint left
= 1 -
45=
15 15 of the paint = 1 x 6 u = 6 u
Remaining paint left = 6 u
Number of tables that Adam can paint with the remaining paint
= 6 u ÷ 1 u
= 6
(b)
Number of desks that Adam can paint with the remaining paint
= 6 u ÷ 2 u
= 3
Answer(s): (a) 6; (b) 3