1.5kg is 1500 grams.
Maria uses 50g a day, so to know how many days takes eating the whole packet just divide 1500 by 50.
Age
True
16 there you gooooooooo
If is the distance the runner travels between first and second base, then the distance between him and home plate satisfies
(where the 90 here refers to the distance between first base and home)
Differentiating both sides with respect to time gives
The runner's speed is . When he is away from first base, he is
away from home plate. So he is moving away from home plate at a rate of