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
llm
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.