Answer:
Option (d)
5/24
Step-by-step explanation:
Hour taken to complete 1/8 of his test=3/5 hour
Suppose r is the rate at which Jackuez completes his test
For completing the test in t hours
The equation is
y= r t
where y is the part of test which will be completed in t hour
with the information given
substituting the values


now when t=1 hour
substituting the value


hence at 1 hour his test was completed
