To prepare for a math test eric study three times as long as kendra and 1/2 as long as geraldo. how long did geraldo study if kendra studied for 20 minutes?

Let

x> time in minutes used by Eric to study

y> time in minutes used by Kendra to study

z> time in minutes used by Geraldo to study

we know that

x=3y> equation 1

x=0.5z

z=2x> equation 2

y=20 minutes > equation 3

substitute equation 3 in equation 1

x=3*20=60 minutes

find the value of z in equation 2

z=2*60=120 minutes

therefore

the answer is

The time in minutes used by Geraldo to study was 120 minutes

answer: a

step-by-step explanation:

10.2 units