Math questions help = )

@MITer94‌ thanksssssssssssssssssss allooooooottttttttttttttttttttttttttt = ))))))))))))
@xiggi‌ thanks alot i really appreciate this detailed explanation but i have one small question in the question i wrote why we did 3045/30+45 not 2(3045)/30+45 as in the rule? i mean why we didnt multiply it by 2? because it asked about the distance of the morning only?