Answer:
7
Step-by-step explanation:
5d=750
750/5=150
150(miles) x 5 (days) = 750(total miles)
Christopher = 35 hours
Christopher and Cynthia = 25 hours
1/25 - 1/35 = 2/175
175/2 = 87.5 hours <==== Cynthia needs 87.5 hours to paint the house alone.
It would be false i think