The average temperature for the first 4- days of a week is 40.2-degree Celcius and that of the last 4 days is 41.3-degree Celcius If the average temperature for the whole week is 40.6-degree Celcius then the temperature on the fourth day 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...

A train travels 360 km at a uniform speed. If the speed had been 5 km/h more, it would have taken 1 hour less...

A man's investment doubles in every 5 years. If he invested Tk. 5,000 in each of the years 2010, 2015, 2020 th...