If a merchant offers a discount of 40% on the marked price of his goods and thus ends up selling at cost price, what was the % mark up? (Answer in Percent)

What is the minimum number of square marbles required to tile a floor of length 5 meters 78 cm. and width 3 meters 74 cm?  

A shopkeeper bought 25 kg. of pulses at the rate of Rs. 54 kg. He sold forty percent of the total quantity at the rate of Rs. 50 per kg. at what price per kg should he sell the approximately quantity to make 25% overall profit ?

If a² + a + 1 = 0 then the value of a⁹ is. 

An amount of money is to be divided among Sakshi, Aastha and Ruchita in the ratio of 3: 5: 7 respectively. If the amount received by Ruchita is Rs. 8000 more than the amount received by Aastha, what will be the average amount received by Sakshi & Aastha?

The total marks obtained by Abhishek in Zoology, Botany and Chemistry together is 180 more than the marks obtained by him is botany. What are the average marks obtained by him is zoology and Chemistry together?

If 999x + 888y = 1332 and 888 x + 999y = 555.then the value of (x + y) is-

Find the area of triangle whose medians are 8 cm, 15 cm and 17 cm respectively?