Adam has some paint.
He uses
25 of it to paint 8 cupboards and 6 chairs.
The amount of paint needed to paint a chair is 4 times that of a cupboard.
- How many cupboards can he paint using the remaining paint?
- How many chairs can he paint using the remaining paint?
|
Cupboards |
Chairs |
Number |
8 |
6 |
Value |
1 u |
4 u |
Total value |
8 u |
24 u |
(a)
Paint needed for 1 cupboard = 1 u
Paint needed for 1 chair = 4 u
Paint needed for 8 cupboards and 6 chairs
= 8 x 1 u x 6 x 4 u
= 8 u + 24 u
= 32 u
25 of the paint = 32 u
15 of the paint = 32 u ÷ 2 = 16 u
Fraction of the remaining paint left
= 1 -
25=
35 35 of the paint = 3 x 16 u = 48 u
Remaining paint left = 48 u
Number of cupboards that Adam can paint with the remaining paint
= 48 u ÷ 1 u
= 48
(b)
Number of chairs that Adam can paint with the remaining paint
= 48 u ÷ 4 u
= 12
Answer(s): (a) 48; (b) 12