Asked by Miyiah

There are 100 coins in a jar and 10 are dimes. The rest are pennies and nickles. There are twice as many pennies as nickels. How many pennies and nickles are in the jar?

Answers

Answered by Damon
p + n = 90
p = 2 n

3 n = 90
n = 30

p = 60
Answered by Miyiah
Thank you, can you please explain where the number 3 came from? Thank you so much!
Answered by Damon
p + n = 90
but we know that p is 2 n
so
2n + n = 90
or
3 n = 90
Answered by Miyiah
Thank you very much!
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