An employee may claim Tk. 7 for each kilometer when he travels by taxi and Tk. 6 for each kilometer when he drives his own car. If in one week he claimed Tk. 900 for traveling 135 km, how many kilometers did he travel by taxi?

A school has a total of 90 students. There are 30 students taking Physics, 25 taking English, and 13 taking bo...

The average temperature for the first 4- days of a week is 40.2-degree Celcius and that of the last 4 days is...

There are two numbers where the sum of twice the first number and thrice the second number is 100. And the sum...

The interest charged on a loan is ‘P’, per Tk, 1000 for the first quarter (3 months), and 'Q' per Tk. 1000 for...

X sells an item to Y at a profit of 28% on his cost and Y sells the same item to Z at a loss of 25% on his cos...

A salesman receives daily wage of Tk. 250 and earns a commission of 15% on all sales he makes. How much taka w...