Explanation

The sum of the values is calculated as the average multiplied by the number of values: 30 * 4 = 120.

Therefore, the sum of the values is 120.

Explanation

The average is the sum divided by the number of quantities:

Average = Sum / n

115 = 1840 / n

To find 'n', multiply both sides by 'n' and then divide by 115:

n = 1840 / 115

n = 16

Explanation

Find how many man-days to complete the road:

70*35 = 2450 man-days

Let d = days required for 40 men to do it.

40d = 2450

d=402450​=61.25

Explanation

120 men can do work = 30 days

1 man can do this work = 120 x 30 = 3600 days

80 men can do this work = 3600/80 = 45 days

Explanation

Total students = 26

Students who like football = 21

Students who like cricket = 14

Let x be the number of students who like both football and cricket.

Using the formula:

(Football ∪ Cricket) = Football + Cricket – Both

So,

26 = 21 + 14 – x

26 = 35 – x

x = 35 – 26

x = 9

Explanation

The CP of the gun = Rs. 2500

The SP of the gun = Rs. 900

The loss is = CP - SP = Rs. ( 2500 - 900 )

= Rs. 1600

Hence, the loss incurred by Akbar is 64%.

Explanation

10% of 38 = (10 ÷ 100) × 38 = 3.8

Explanation

Formula: Men * Days = Work
5 * 50 = 250
Formula:  Men * Days = Work
3 * Days = 250
Days=250/3

Answer =83.33

Explanation

To find the average:

First 5 multiples of 11:

11, 22, 33, 44, 55

Add the multiples:

11 + 22 + 33 + 44 + 55 = 165

Divide by the number of multiples:

165 ÷ 5 = 33

Explanation

Total production for Jan-March = 1500 tons × 3 months = 4500 tons

Total production for Jan-April = 4500 tons + 1200 tons = 5700 tons

New average = Total production / Number of months = 5700 tons / 4 months = 1425 tons