A shopkeeper stopped using plastic bags and asked his customer to bring their own carry bags due to which his sales reduced by 20 units . if the square of new sale reduced by 400 gives 60 times the original sale , find his original sale.
-
Subject:
Math -
Author:
kaileykl5o -
Created:
1 year ago
Answers 1
Answer:100 units
Step-by-step explanation:
Let Original sale = x unit
And
Given :his sales reduced by 20 units , So
New sale = x - 20
And
As given : If the square of new sale reduced by 400 gives 60 times the original sale. So we get
( x - 20 )2 - 400 = 60x
( x2 + 400 - 40x ) - 400 = 60x
x2 + 400 - 40x - 400 = 60x
x2 - 40x = 60x
x2 = 100x
x = 100
So,
Original sale = 100 unit
-
Author:
lacimgvy
-
Rate an answer:
4
If you know the answer add it here!
Choose a language and a region
How much to ban the user?
1 hour
1 day
100 years