Answer:
Given :
Cost of onsite repair = 3 times cost of at store
cost of mai services = cost of at store -10
On-site work completed last week = 15
At store work completed = 40
mail work completed = 5
Let's Assume :
The cost of at store = x
the cost of in-site = 3x
the cost of mail service = x-10
Solution :
Part 1] :
See the "let's Assume" part
The cost of at store = x
the cost of in-site = 3x
the cost of mail service = x-10
Part 2 ]
The equation that can be formed is :
15(3x)+40(x)+5(x-10) = 2650 ,
or, 45x+40x+5x-50 = 2650
or, 90x = 2700
Part 3]
To determine the cost of on-site work, we will solve the equation formed in "Part 2"
So, 90x = 2700
or, 9x = 270
or, x = 270/9
or, x = 30
So,
The cost of on site repair = ₹90
The cost of at store = 30
The cost of by mail service = 20
Hope it helped Freind !
Step-by-step explanation:
