Question 492894
Let {{{ x }}} = backpack sales 2 yrs ago
given:
Last year's sales were {{{ x + .1x = 1.1x }}}
This year's sales = {{{ 1.1x + .1*(1.1x) = 1.1x*(1 + .1) }}}
{{{ 1.1x*(1 + .1x) = 1.1^2*x }}}
{{{ 1.1^2*x = 1.21x }}}
Also given:
{{{ 1.21x = 1452 }}}
{{{ x = 1200 }}}
1200 backpacks were sold 2 years ago