Explanation

The bookseller sold the book for Rs.60 to make a profit of 20%. This means that the selling price (Rs.60) is 120% of the cost price (100% + 20% profit).

To find the cost price, we can set up an equation:

Selling Price = Cost Price + Profit

60 = Cost Price + (20% of Cost Price)

Let's convert the percentage to a decimal and simplify:

60 = Cost Price + 0.20(Cost Price)

60 = 1.20(Cost Price)

Now, divide both sides by 1.20:

Cost Price = 60 / 1.20

Cost Price = 50

So, the cost price of the book is Rs.50.

To earn a profit of 10%, the bookseller should have sold the book for:

Selling Price = Cost Price + Profit

= 50 + (10% of 50)

= 50 + 5

= 55

Therefore, the correct answer is: 55

Explanation

The even numbers between 1 and 25 are 12

Such as: 2,4,6,8,10,12,14,16,18,20,22, and 24.

Explanation

To add these fractions, we need to find a common denominator, which is 77 (7 x 11). So, we'll convert both fractions to have a denominator of 77:

(3/7) = (3 x 11) / (7 x 11) = 33/77

(6/11) = (6 x 7) / (11 x 7) = 42/77

Now, we can add:

33/77 + 42/77 = 75/77

To convert this to a decimal, we'll divide the numerator by the denominator:

75 ÷ 77 = 0.974 (approximately)

So, the correct answer is: 0.97

Explanation

To evaluate this expression, we need to follow the order of operations (PEMDAS):

Evaluate the expression inside the parentheses:

   2(74) = 2 x 74 = 148

   3+6 = 9

Multiply 9 by 9:

   9(9) = 9 x 9 = 81

Multiply 2 by 148:

   2 x 148 = 296

Subtract 81 from 296:

   296 - 81 = 215

So, the correct answer is: 215

Explanation

Given expression = 5005 - 5000 ÷ 10.00

= 5005 - 500

= 4505