Currently you have $80 and your sister has $145. You decide to save $6 of your allowen e each week, while your sister spends her whole allowance plus $7 a week. How long will it be before you have as much money as your sister?

Question

Currently you have $80 and your sister has $145.  You decide to save $6 of your allowen e each week, while your sister spends her whole allowance plus $7 a week.  How long will it be before you have as much money as your sister?

PsyDAG · Answer

80 + 6x = 145 - 7x Solve for x.

Deborah · Answer

X=5