If the base is decreased by 50%, it becomes 9. We get this by simply multiply 18 * 0.5 If the height is decreased by 50%, it becomes 4. Again, we just do 8 * 0.5 The area of a parallelogram is base * height. 9 * 4 = 36
This would bring you to $160.00. This is because you initially had $20.00, because of the $13 and $7. Then, your family gave you a total of $140.00, and 140 + 20 = 160.