Adam has some paint.
He uses
911 of it to paint 2 chairs and 8 cupboards.
The amount of paint needed to paint a cupboard is 2 times that of a chair.
- How many chairs can he paint using the remaining paint?
- How many cupboards can he paint using the remaining paint?
|
Chairs |
Cupboards |
Number |
2 |
8 |
Value |
1 u |
2 u |
Total value |
2 u |
16 u |
(a)
Paint needed for 1 chair = 1 u
Paint needed for 1 cupboard = 2 u
Paint needed for 2 chairs and 8 cupboards
= 2 x 1 u x 8 x 2 u
= 2 u + 16 u
= 18 u
911 of the paint = 18 u
111 of the paint = 18 u ÷ 9 = 2 u
Fraction of the remaining paint left
= 1 -
911=
211 211 of the paint = 2 x 2 u = 4 u
Remaining paint left = 4 u
Number of chairs that Adam can paint with the remaining paint
= 4 u ÷ 1 u
= 4
(b)
Number of cupboards that Adam can paint with the remaining paint
= 4 u ÷ 2 u
= 2
Answer(s): (a) 4; (b) 2