Answer:
24 Pens For Staples and 18 For Raid Aids
Step-by-step explanation:
Ryan spent the same amount of money on both brands
In total, he had bought 42 pens.
So, I have to make a graph and find out at what point did they gain the same amount of money.
Staples: [s]
.60s (This would be the equation for Staples)
Rite Aid: [r]
.80r (This would be for Rite Aid)
Staples Rite Aid
x | y x | y
1 | .60 1 | .80
2 | 1.2 2 | 1.6
3 | 1.8 3 | 2.4
4 | 2.4 4 | 3.2
5 | 3.0 5 | 4.0
At 4 pens Staples reach $2.4, while at 3 pens, Rite Aid got $2.4
So then he would have bought 7 pens. But we're looking for 42, which is 6x this amount.
Since the amount of is 6x more, I'll multiply each of the amount of pens by 6.
6(4) = 24 Pens at Staples
6(3) = 18 Peans at Raid Aids
In totals they have 42 pens, but we have to check if they reach the same price.
.60(24) = $ 14.4
.80(18) = $ 14.4
We can now reach to a conclusion that these two amounts are correct.
The amount of pens he bought from each brand(s) are:
Staple: 24 Pens
Raid Aids: 18 Pens
(Sorry I took a while, I was trying to make the graph and stuff!)
