Question 333291
let dimes be x
nickels will be 2x
pennies will be 5x

5x+5*2x+10x=200
5x+10x+10x=200
25x= 200
x= 8 dimes
..
pennies = 5x = 40 
nickels = 2*8=16
..
CHECK
40+16*5+8*10
=40+80+80
= 200