Question

A sum of money amounting to $5.80 consists of dimes and quarters. If there are 34 coins in all, How many are quarters ?

Answer 1

let x be the number of quarters and y the number of dimes

34 coins in all: x + y = 34

amounting to $5.80: 0.25x+0.1y=5.80

solve for x, the number of quarters

Answer 2

im confused on how do i solve for x

Answer 3

is it 22 ?

Answer 4

21 rounded

Answer 5

isolate y, x + y = 34 -> y=34-x

substitute into 0.25x+0.1y=5.80

0.25x+0.1(34-x)=5.80

x=16

Answer 6

thanks

Answer 7

no problem

Answer 8

i just put another one up same type of problem