a 2 digit number can be written in the form 10x+y.if the digits are reserved, the new number is 10y+x.to solve coin problems, you can write one equation for the value of the coins.

a collection of dimes and quarters iss worth $25. there are 40 more domes than quarters how many of each are there?

Question

a 2 digit number can be written in the form 10x+y.if the digits are reserved, the new number is 10y+x.to solve coin problems, you can write one equation for the value of the coins.

a collection of dimes and quarters iss worth $25. there are 40 more domes than quarters how many of each are there?

anonymous · Answer

x: dimes
y: quarters
$$0.1x+0.25y=25$$ and
$$y+40=x$$

dumbcow · Answer

D = 40 + Q
10D + 25Q = 2500

.. same thing but you can multiply equation by 100 to eliminate decimals

anonymous · Answer

solve that and you get
$$x=100,  y=60$$

whatever · Answer

thank you(:

whatever · Answer

how did you get that answer? when i did it i got something else