Quantitative Aptitude - Arithmetic Ability Questions

If a3+ b3 = 19 and a + b = 1, then what is the value of ab?

If a3 + b3 = 28 and a + b = 4, then what is the value of ab?

90% of X = 40% of Y and Y = a% of X. What is the value of a?

By increasing the price of entry ticket to a fair in the ratio 11:16, the number of visitors to the fair has decreased in the ratio 19:9. In what ratio has the total collection increased or decreased?

An army of 12000 consists of Europeans and Indians. The average height of a European is 5ft 10 inches and that of an Indian is 5ft 9 inches and that of the whole army is 5ft 9 3/4 inches. Then the number of Indians in the army is ?

In a shop 4.5% of 1500 kg toor dal was sold. Find the quantity sold

HCF and LCM of two numbers are 11 and 825 respectively. If one number is 275 find the other number.

Find the LCM of 0.63, 10.5, 2.1, 4.20