##### what do i need to do to solve this and how to solve this

 Mathematics Tutor: None Selected Time limit: 1 Day

a jar filled with only nickles and dimes contain  a total of 61 coins. the value of all of the coins in the jar is \$4.15. how many dimes are in the jar

Oct 20th, 2015

In this question, form two equations to represent the total number of coins and the total values of the coins. Then after forming the equations, solve them simultaneously.

We know that a dime = \$0.10 and a nickel = \$0.05

Let x represent the number of dimes and y represent nickels,

therefore:

a) x + y = 61

b)0.1x + 0.05y = 4.15

The second equation can be rewritten by multiplying the decimals by 100 to get

10x + 5y = 415

so 2x + y = 83

Solve the two equations simultaneously i.e.

a) x+y=61

b)2x+y=83

Therefore x=22 and y=39

Hence there are 22 dimes in the jar

Oct 20th, 2015

can you explain it in like a simpler way im not clear on what you did

Oct 20th, 2015

...
Oct 20th, 2015
...
Oct 20th, 2015
Dec 6th, 2016
check_circle