​The value of the variable x in the equation 3(5x + 2) – 4 = 2(1 – 4x) is:​

20 dual desks and 12 chairs were bought for ₹79,600. If the average cost of a dual desk was ₹3,500, find the average cost of a chair.​

5 apples, 6 oranges and 7 bananas cost 250, while 6 apples, 4 oranges and 2 bananas cost 180. The cost (in) of 4 oranges and 8 bananas is

Some horses and same number of persons were going somewhere. Half of the persons were sitting on their horses whereas remaining persons were walking and leading their horses. If the number of legs walking is 70, then how many horses were there?

There are two numbers such that the big number is obtained by adding 5 to the other. If the total of the two numbers is 19, find the product of those numbers.

If 70 is subtracted from two-third of a number, then the result is equal to the sum of 30 and one-fourth of that number. Find the number.

A house and a garden together cost ₹51 lakh and the cost of the garden is $$\frac{5}{12}$$ of the cost of the house. Find the cost of the garden (in ₹).

​In a competitive examination 1 mark is awarded for a correct answer, 0 marks for an unattempt question and $$\frac{1}{2}$$​ mark is deducted for every wrong answer. Ambika answered 120 questions and got 90 marks. How many answers were correct?​

The cost of a keyboard and a mouse is ₹3600. If the cost of the keyboard is seven times that of the mouse, what is the cost of the keyboard?

Seven toy cars and five toy bikes together cost Rs. 600. Five toy cars and three toy bikes together cost Rs. 400. The cost of each toy car is:

A taxi charges a fixed charge of Rs.40 and an additional charge per kilometre. A person pays Rs.150 for 11 km of distance travelled. Find out the charges paid by Ramesh if he travelled for a distance of 20 km