Question

At 8:00 Am moses leaves home driving at 35mph. A half hours later, marie discovers that she left her Food. He drive 50mph to catch up with her. If marie is delayed 15minute's with a flat tire, at what time will he catch up to Moses

Answer 1

$$v_1t=v_2(t-t_1-t_2)$$

$$35t=50(t-0.5-0.25)$$

$$t= 2.5 \ h$$

The time will be 10:30 AM.