एक संख्या को जब 5 से गुणा किया जाता है, तो उसमें 80 की वृद्धि हो जाती है। वह संख्या ज्ञात कीजिए।

Find the number of solutions for the pair of linear equations: 5x − 7y + 28 = 0 and 10x + 14y − 28 = 0.

If 2p3 - 57 = 3, then the value of p is:

The cost of 2 sarees and 4 shirts is Rs. 1600. With the same amount of money, one can buy 1 saree and 6 shirts. If someone wants to buy 12 shirts, how much amount does he/she have to pay?

A zoo had some lions and some parrots. The keeper counted 15 heads and 50 legs. The number of lions in the zoo is:

For what integral value of k, the system of equations kx - 5y + 6 = 0 and 4(k - 1)y - 12x + 3 = 0 has no solution?

How many solutions do the linear equations 5x + 3y = 14 and 15x + 9y = 42 have?

Ajay pays Vijay ₹20 for each day Vijay works, and forfeits ₹3 for each day Vijay is idle. At the end of 60 days, Vijay receives ₹280. For how many days did Vijay remain idle?

A person wants to buy 6 kg of tomatoes and 7 kg of potatoes, costing Rs. 190 in total. Finding the tomatoes to be of good quality, he buys 2 kg more tomatoes and 6 kg less potatoes, spending Rs. 170 in total. What is the price of 1 kg of tomatoes?