Adam has some paint.
He uses
911 of it to paint 4 gates and 7 desks.
The amount of paint needed to paint a desk is 2 times that of a gate.
- How many gates can he paint using the remaining paint?
- How many desks can he paint using the remaining paint?
|
Gates |
Desks |
Number |
4 |
7 |
Value |
1 u |
2 u |
Total value |
4 u |
14 u |
(a)
Paint needed for 1 gate = 1 u
Paint needed for 1 desk = 2 u
Paint needed for 4 gates and 7 desks
= 4 x 1 u x 7 x 2 u
= 4 u + 14 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 gates that Adam can paint with the remaining paint
= 4 u ÷ 1 u
= 4
(b)
Number of desks that Adam can paint with the remaining paint
= 4 u ÷ 2 u
= 2
Answer(s): (a) 4; (b) 2