Explanation

Given that x added to itself 13 times gives 112:

x + 13x = 112

14x = 112

x = 112 / 14

x = 8

Explanation

Days in which 40 cows eat 40 bags of husk = 40 days

Days in which 1 cow eat 40 bags of husk = 40 * 40 days

Days in which 1 cow eat 1 bag of husk = (40 * 40) / 40 bags

In a dairy form 40 cows eat 40 bags of husk in 40 days, In 40 days one cow will eat one bag of husk

Explanation

The sum of the first n natural numbers can be calculated using the formula:

n(n + 1)/2

Here, n = 200:

Sum = 200(200 + 1)/2

= 200 * 201 / 2

= 20100

Explanation

4 is the highest number that divides 20, 48, and 56 exactly.

Factors:

20 (1,2,4,5,10,20)

48 (1,2,3,4,6,8,12,16,24,48)

56 (1,2,4,7,8,14,28,56).

Common HCF is 4.

Explanation

=56 - 3 + 7 - 5.1

=53 + 7 - 5.1

=60 - 5.1

= 54.9