I need help with this please Saving up for her retirement Mr. Arta begins making deposits of $3,000 at the end of every 3 months into her RRSP for 15 years. At retirement, she will then immediately...

I need help with this please

Saving up for her retirement Mr. Arta begins making deposits of  $3,000 at the end of every 3 months into her RRSP for 15 years. At  retirement, she will then immediately begin making withdrawals of  $3,600 at the

beginning

of the month. If her RRSP always earns 7%  compounded semi-annually, for how

many years

will she be able to  make those $3,600 withdrawals before the money runs out?