Adam has some paint.
He uses
911 of it to paint 8 desks and 5 cabinets.
The amount of paint needed to paint a cabinet is 2 times that of a desk.
- How many desks can he paint using the remaining paint?
- How many cabinets can he paint using the remaining paint?
|
Desks |
Cabinets |
Number |
8 |
5 |
Value |
1 u |
2 u |
Total value |
8 u |
10 u |
(a)
Paint needed for 1 desk = 1 u
Paint needed for 1 cabinet = 2 u
Paint needed for 8 desks and 5 cabinets
= 8 x 1 u x 5 x 2 u
= 8 u + 10 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 desks that Adam can paint with the remaining paint
= 4 u ÷ 1 u
= 4
(b)
Number of cabinets that Adam can paint with the remaining paint
= 4 u ÷ 2 u
= 2
Answer(s): (a) 4; (b) 2