Answer:
85%
Step-by-step explanation:
85% because I searched and it gave me 85%
<span>You need to set up 2 equations for this, a system to be exact
let x represent the cheaper phone and y represent the upgraded phone
for store costs you will have
5x+25y=200
for selling prices you will have 30x+100y=900
set these two equations together
5x+25y=200
30x+100y=900
multiply the first one by -4 and add them
-20x-100y=-800
30x+100y=900
10x=100
x=10
10 cheaper phones, plug into any equation again
5(10)+25(y)=200
y=6<<<6 upgraded phones</span>
Answer:
(5(x-1))/3x
Step-by-step explanation:
The two numbers are 21 and -4 because 21×(-4)=(-84). And when you add 21+(-4) you get 17.
