Tilly needs to sell 100 bags at $10 per bag to make $300 in profit. How much did she buy each bag for?
Tilly will make 100 x $10 = $<T>multiply(100, 10)=1000 in total
She has spent $1000 - $300 = $<T>subtract(1000, 300)=700 on 100 bags
Each bag cost Tilly $700 / 100 = $<T>divide(700, 100)=7.0
