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1. (7/8) 2. (4/5)

Step-by-step explanation:

(1st question)

A torch and a battery cost 2.50 altogether. The torch costs 1.50 more than the battery.

Torch (t) = b+1.50

Torch (t) + Battery (b) = 2.50

t+b=2.50

b+1.50+b=2.50

2b=1

b=.5

Battery costs .50 and torch costs 1.50 more = 2.00

Battery = .50

Torch = 2.00

.50 + 2.00 = 2.50 = true

Total price is 2.50- torch price is 2

200/250- divide both by 50=

200/50  /   250/ 50=

4/5

The measure is X=4

Step-by-step explanation:

you set the expressions equal to each other and find the value of X

so you have 20x+60 and 30x+20

you set them equal to each other and it looks like 20x+60=30x+20

you move the 30x to the other side by subtracting it on both sides getting

-10x + 60= 20

next you move the 60 to the other side getting -10x=-40

then you divide -10 on both sides getting x=4