38)
a math teacher wants to make a test containing 50 easy questions and 20 hard questions. each easy question is allowed 30
seconds and each hard question is allowed 1 minute 30 seconds to complete. how many minutes should the teacher allow for the
whole test?

Maximum time the teacher should allow for the whole test should be = 55 minutes

Step-by-step explanation:

Number of easy questions in the test = 50

Number of hard questions in the test = 20

Time for each easy question = 30 seconds =    

[As 1 minute = 60 seconds]

Time for each hard question = 1 minute 30 seconds =

Using unitary method to find duration of whole test.

If 1 easy question takes = 0.5 minutes

Then, 50 easy questions will take = = 25 minutes

If 1 hard question takes = 1.5 minutes

Then, 20 hard questions will take = = 30 minutes

Total time for the test will be = = 55 minutes

answer: 298143

step-by-step explanation:

.632

step-by-step explanation:

6 * 1/10 = 3/5

3*0.01 = 0.03

3/5 + 0.03 = .63

2*0.002 = .002

.63 + 0.002 = .632