+0  
 
0
117
3
avatar+1373 

The difference of 9/10 of a number and 30 is the same as 3/5 of the number. Find the number?

 Aug 23, 2020
 #1
avatar
0

The number is 320.

 Aug 24, 2020
 #2
avatar
0

Let the number = n

 

9/10n - 30 = 3/5

 

0.9n - 30 =0.6

0.9n = 0.6 + 30

0.9n =30.6

n =30.6 / 0.9

 

n = 34

 Aug 24, 2020
 #3
avatar
0

0.9x - 30=3/5x, solve for x

 

x = 100

 Aug 24, 2020

17 Online Users

avatar