Lisa's penny bank is 1/10 full. After she adds 440 pennies, it is 3/5 full. How many pennies can Lisa's bank hold?

Mathematics · High School · Thu Feb 04 2021

Answered on

Let Lisa' penny bank can hold x pennies

Thus, Lisa's penny bank is 1/10x full and after adding 440 pennies it is 3/5x full

That means, (3/5 - 1/10)x = 440

LCM of 5 and 10 is 10

(6 - 1)x/10 = 440

5x = 4400

dividing both sides by 5, we get

5x/5 = 4400/5

x = 880

 

Therefore, Lisa's penny bank can hold 880 pennies.

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