Answer:
By one week, Ander will have washed 105 bikes.
Step-by-step explanation:
First, you need to find the rate of how many bikes Ander can wash per day. You do this by dividing 75 and 5 which would result in 15. You need to know how much he washes per week so you multiply 15 x 7=105. Hope this helps. Please rank brainliest!