Question

Marla’s penny bank is 2/5 full. After she adds 320, it is 2/3 full. How many pennies can Marla’s bank hold?

a) 300 pennies
b) 480 pennies
c) 640 pennies
d) 420 pennies

Answer 1

Marla's bank can hold 1600 pennies.

Step-by-step explanation:

To find out how many pennies Marla's bank can hold, we need to determine the total capacity of the bank.

Given that the bank is 2/5 full initially and then becomes 2/3 full after adding 320 pennies, we can set up the following equation:

2/5 x Total capacity + 320 = 2/3 x Total capacity

To solve for the total capacity, we can cross-multiply:

2/5 x Total capacity = 2/3 x Total capacity - 320

1/5 x Total capacity = 320

Total capacity = 320 x 5 = 1600

Therefore, Marla's bank can hold 1600 pennies.