Answer:
10 minutes
Step-by-step explanation:
t × s = d
if they catch up distance is equal and time is except for 5 minute difference
therefore s × t = s × t
convert minutes to hours
(a+5)/60 and a/60
60 × (a+5)/60 = 90 ×a/60
times both sides by 60
60a+300=90a
300=30a
a=10
