Question

A jar contains n nickels and d dimes. There are 18 coins in the jar, and the total value of the coins is $1.10. How many nickels and how many dimes are in the jar?

Answer 1

there are 4 dimes in the jar

Explanation:

5 cents is a nickel and 10 cents is a dime

let x be the number of nickel and y be the number of dime

5x + 10y = 110

simplify the equation, we have

x + 2y = 22. eqn (1)

x + y = 18. eqn (2)

subtract (2) from (1), we have

y = 4.

therefore, there are 4 dimes

Answer 2

the answer is 16 nickels 2 dimes