Question

8. A student scored 18 marks out of 25
marks in the first test of math In the
second test he scored 22 marks in the
second test exceeds his first test by
INV 2017)​

Answer 1

Answer:

Average = total score / number of tests

total score = 180 + 150 = 330

50% average = 330 * 0.5 = 165 ( he needs to score this )

He has scored 30% in the first test with 180 marks

so he has already scored 0.3 * 180 = 54

Now He needs to score 165-54 = 111 in the second test.

So the precentage = 111/150 = 74

( 0.74 * 150 = 74 * 1.5 = 74 + 74/2 = 74 + 37 = 111 )

Answer 2

Answer:

4

Step-by-step explanation:

22-18= 4

Because it is bigger than it