please show how to solve number 8

Suppose you had a sealed jar full of pennies in which you do not know how many pennies were minted pre or post 1982. From the data you collected in the experiment and the data given below, determine the possible range of numbers of pennies in the jar. Use your average penny mass of 2.4879g and old penny mass of 3.1057g. Jar full of pennies: 753.17g Empty Jar: 86.39g Minimum Number of Pennies: Maximum Number of Pennies: Enter an inteser or decimal number (more..)