find the solution to this question
Attachments:
Answers
Answered by
0
mujhe nahi pata
bahii
sorry
Answered by
0
Answer:
Step-by-step explanation:
Let the total marks be x
42 + 2*x/100 + 9 = 36*x/100
51+ x/50 = 18x/50
51 = 18x/50 - x/50
51 = 17x/50
x = (51 * 50)/17 = 150
for 80% marks = (150* 80)/100 = 120
extra marks required to reach 80% by together = 120 - ( 54 + 42)
= 24
Similar questions