Answer:
Something like M=80-(7x4)
Step-by-step explanation:
Answer:
First Two: 2 million,
Second Two: 2 hundred thousand
Multiply both sides by three to get 2x=30
Then divide both sides by 2 to get x=15
To get the answer we can use proportion.
30----------100%
12-----------x
Cross multiply now
30x=12*100%
30x=1200% /:30 (divide both sides by 30)
x=40% - it's the percentage of cars which finished the race.
100%-40%=60% - it's the answer
Average of 2 numbers is 40
so total = 2 x 40 = 80
300 - 80 = 220
average of remaining 10 numbers = 220/10 = 22
answer
B) 22
