10 A child has 26 pennies 15 nickels 21 dimes and 18 quarter

Solution

Given data:

A child has 26 pennies, 15 nickels, 21 dimes, and 18 quarters in a coin bank.

When the child picks up the bank, a single coin falls out.

Need to find the probability that the coin is a quarter.

Probability of a event = possibility of occurance of event / Total possibilities.

Here, event is a single coin falls out is to be a quarter.

Possibilities of occurance of the event = 18

Because there are 18 quarters.

Total possibilities = 26 + 15 + 21 + 18 (adding total number of coins)

= 80