WeCP Average Quiz 1

Explanation:

Average = total runs / no.of innings = 22

So, total = Average x no.of innings = 22 x 10 = 220.

Now increase in avg = 4runs. So, new avg = 22+4 = 26runs

Total runs = new avg x new no. of innings = 26 x 11 = 286

Runs made in the 11th inning = 286 - 220 = 66

Explanation:

Total weight increased = (8 x 2.5) kg = 20 kg.

Weight of new person = (65 + 20) kg = 85 kg.

Explanation:

Let the numbers be x-4, x-2, x, x+2 and x+4

So, difference between highest and lowest number is (x+4)-(x-4)=8

Explanation:

Let there be x students in the class.

Total increase in marks = (x * 1/2) = x/2.

x/2 = (83 - 63) => x/2 = 20 => x = 40.

Explanation:

Correct Sum = (36 * 50 + 48 - 23) = 1825.

Correct mean = = 1825/50 = 36.5

Explanation:

Since the month begins with a Sunday, so there will be five Sundays in the month,

Required average = (510 * 5 + 240 * 25) / 30 = 8550/30 = 285.

Explanation:

Total age increased = (5 * 2) years = 10 years.

Sum of ages of two new women = (10+19+.35) years = 64 years

Average age of two new women = (64/2) years = 32 years.

Explanation:

Lot the total number of workers be v Then,

8OOOv = (12000 * 7) + 6000 (v - 7) <=>  2000v = 42000  <=>  v = 21.

Explanation:

16x + 85 = 17(x + 3)

x = 34 + 3 = 37

Explanation:

Total age of 4 members, 10 years ago = (24 x 4) years = 96 years.

Total age of 4 members now = [96 + (10 x 4)] years = 136 years.

Total age of 6 members now = (24 x 6) years = 144 years

Sum of the ages of 2 children = (144 - 136) years = 8 years.

Let the age of the younger child be x years.

Then, age of the elder child = (x+2) years.

So, x+(x+2) =8 <=> x=3

Age of younger child  =  3 years.