Answer : The percentage of pennies in the collection is 37.84 %.
Explanation :
To calculate the percentage of pennies in the collection, we use the equation:
![\text{Percentage of pennies}=\frac{\text{Coins of pennies}}{\text{Total number of coins}}* 100](https://img.qammunity.org/2020/formulas/chemistry/middle-school/4e1fat4dmmwftd3g6e9b0i57zs3vihv28r.png)
Given:
Number of coins of pennies = 14
Number of coins of dimes = 16
Number of coins of quarters = 7
Now we have to calculate the total number of coins.
Total number of coins = 14 + 16 + 7 = 37
Now we have to calculate the percentage of pennies in the collection.
![\text{Percentage of pennies}=(14)/(37)* 100=37.84\%](https://img.qammunity.org/2020/formulas/chemistry/middle-school/wh7n0t6jx3t075v0j8drzm1f0cvmsjzo1v.png)
Hence, the percentage of pennies in the collection is 37.84 %.