Question 763480
Let {{{ p }}} = the number of pennies it can hold
given:
{{{ (1/2)*p + 50 = (2/3)*p }}}
Multiply both sides by {{{ 6 }}}
{{{ 3p + 300 = 4p }}}
{{{ p = 300 }}}
The bank can hold 300 pennies
check:
It's 1/2 full- that's 150 pennies
Add 50- that's 200 pennies
{{{ 200/300 = 2/3 }}} full
OK