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Chapter 3: Q. 168 (page 351)

Deloise has $1.20 in pennies and nickels in a jar on her desk. The number of pennies is three times the number of nickels. How many coins of each type does she have?

Short Answer

Expert verified

The number of nickels is 15 and pennies are 45 .

Step by step solution

01

Step 1. Given Information

Total amount=$1.20

Let he number of nickels be x

Therefore ,

According to the question,

number of pennies will be3x

02

Step 2. Solution of the equation 

Now, According to the question,

0.05x+0.01(3x)=1.20

0.05x+0.03x=1.200.08x=1.20x=15Therefore,3x=3脳15=45

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