Wiley Edge Averages Quiz-1

 

Explanation:

The total age of Leonard’s all family members = 30 × 14 = 420  

New baby born and after 4 years the total age of all the members = 420 + 15 × 4

= 420 + 60 = 480

Required Average=\frac{480}{15} = 32 Years[/latex]

 

Explanation:

Total sales = Rs. 38000.

The total sales from 20 outlets = 20 × 400 = Rs. 8000.

The total sales from 10 outlets = 10 × 900 = Rs. 9000

The total sales of the remaining 30 outlets,

= Rs. (38000 – 8000 – 9000) = Rs. 21000

AverageSales=\frac{21000}{30} = 700[/latex]

 

Explanation :
S+T = 23*(39-37) = 46
\frac{S}{T} = \frac{15}{8}
T = 16

 

 

Explanation:

In 2010: 4x+\frac{72}{4} = x+18

After death : 3x+36+ \frac{3N}{3} = x+18-3

N = 3 years

3x+36+\frac{3N}{3} = (x+18)

N = 6 years

6-3 = 3 years from his death

Explanation:
First = 1.5x Second = x Third = 3x Fourth =
1.5x
average = 24.5 = \frac{(1.5x+x+3x+1.5x)}{4}
x = 14

Explanation:

Total expenditure = 459x

36 students joined then total expenditure = 459x+81

average = 459x+ \frac{81}{495} = x-1

x = 16

original expenditure = 16*459 = 7344

Explanation:

L+O = 21600

O = L*170/100

O = 13600

Explanation:

\frac{8000}{n} = a

\frac{8085}{n + 5} = a-1

n^{2} + 90n – 40000 = 0

n = 160

n^{2} + 5 = 165

 

Explanation:

19*19 = \frac{19}{2}*(2a+18d)

38= 2a+18d

37 = a+18d

a = 1

 

Explanation:

40*32 = 1280

1280- \frac{H}{39} = 31

H =71

1280-71- \frac{L}{38} = 31

L = 31