Question

A light plane was flying at an altitude of 200 metres. If it started losing height at a
rate of 1.5 metres/sec, what height would it be at after one minute?

Answer 1

Rate of decrease of altitude=1.5m/s
altitude decreased in one minute=1.5m/s x 1min
                                                =  1.5m/s x 60s
                                               =90m
initial altitude      = 200m
final altitude        =200m-90m
                          =110m

Answer 2

Rate of decrease in altitude =1.5m/s
altitude decreased in 1 minute=1.5m/s x 1min
                                                =  1.5m/s x 60s
                                               =90m
initial altitude      = 200m
final altitude        =200m-90m
                          =110m
i think it is the answer