Math Problem Statement

A piggy bank contains nickels ,dimes and quarters and they total%.90.if there is 3 times as many quarters than nickels and 14 more dimes than nickels.how many of each coin is in the bank?

Solution

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Substitution

Formulas

Value of coins: 0.05n + 0.10d + 0.25q = 0.90
Relationship between quarters and nickels: q = 3n
Relationship between dimes and nickels: d = n + 14

Theorems

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Suitable Grade Level

Grades 6-8