Answer:
75
Step-by-step explanation:
To determine how much of a persons weight is water, multiply 3/4 by their weight.
weight of water = weight x 3/4
100 x 3/4 0r 100 x 0.75 ( same thing)
75
The student weighs 75 lbs underwater
P.S it's not 3.4 it's 3/4 = 75% of our body is made up of water.
