If w is 10 percent less than x, and y is 30 percent less than z , then why is what percent less than xz?

The operation @ is defined for all integers x and y as x @ y=xy-y. If x and y are positive integers, which of...

Anik travels 35 kilometers (km) partly at 4km /h and partly at 5 km/h. If he covers the distance at 5 km/h he...

Kalam bought two varieties of rice , costing Tk. 50 /kg and Tk. 60 /kg each , and mixed them in some ratio. Th...

In a class, 120 students are male and 100 students are female , 25% of the male students and 20% of the female...

is divisible by both 40 and 75 if a has exactly three distinct prime factors, which of the following could be...

There are 48 books on 3 shelves. If 3 books from third shelf are shifted to the second there will be same numb...