Ajar contains n nickels and d dimes. there are 20 coins in the jar, and the total value of the coins is $1.40. how many nickels and how many dimes are in the jar?

Answer : The number of nickel and dimes in the jar are, 12 and 8 respectively.

Step-by-step explanation :

As we are given that:

Number of nickels = n

Number of dimes = d

As, there are 20 coins in the jar. The equation will be:

       .........(1)

or,

    ............(2)

Total value of the coins is $1.40. The equation will be:

As we know that:

1 dime = $ 0.1

1 nickel = $ 0.05

So,

     ........(3)

Now put equation 2 in equation 3, we get:

Now put the value of 'n' in equation 2, we get:

Thus, the number of nickel and dimes in the jar are, 12 and 8 respectively.

x=half

step-by-step explanation:

well what did you do it matters what you did : )

step-by-step explanation: