Janet has three times as many dimes as nickels and twice as many quarters as nickels. If she has $3.40 in all, how many nickels,

Question

3 years ago

8

Janet has three times as many dimes as nickels and twice as many quarters as nickels. If she has $3.40 in all, how many nickels,

dimes, and quarters does she have? If n represents the number of nickels Janet has, which of the following equations could be used to solve the problem? 5n + 10n + 25n = 340

Mathematics

2 answers:

melisa1 [442] · Answer 1 · 2022-04-15T07:18:48+03:00

<h2>Answer:</h2>

The equation that he could be used to solve the problem is:

5n+30n+50n=340

<h2>Step-by-step explanation:</h2>

If n represents the number of nickels Janet has.

Hence n nickels=0.05n dollars.

Then the number of dimes he has is: 3n

( Since, Janet has three times as many dimes as nickels )

Also, 1 dime=0.10 dollars

Hence, 3n dime= 0.30n dollars)

and the number of quarters he has is: 2n

(He has twice as many quarters as nickels

Also, 1 quarter=0.25 dollars

Hence, 2n quarter=0.50n dollars. )

Hence, we have ,

0.05n+0.30n+0.50n=3.40

On multiplying both side of the equation by 100 we have:

5n+30n+50n=340

sashaice [31] · Answer 2 · 2022-04-15T05:24:14+03:00

sashaice [31]3 years ago

4 0

5n +10(3n) +25(2n) = 340 . . . . will solve the problem

This simplifies to
5n +30n +50n = 340