টাকায় ১২টি লেবু বিক্রি করায় ২০% ক্ষতি হয়। ৬০% লাভ করতে হলে টাকায় কতটি লেবু বিক্রি করতে হবে?

50% of the people in an area read Ittefaq and 60% of the people in that area read Prothom Alo. 20% people read...

A 240-meter long train crosses a pole in a platform in 8 seconds . Determine the speed of the train in km/hr.

If 6 workers can complete 1 identical job in 3 days, how long (in days) will it take 4 workers to complete 10...

A form sorting machine can sort 12 forms in 10 minutes. How many forms can it sort in one and half hours at th...

The average of 100 observations in a study was calculated as 49.7 . Later it was revealed that one of the obse...

An instrument store gives a 10% discount to all students off the original cost of an instrument. During a scho...