Rice is now being sold at Taka 20 a kg. During last month its rate was Taka 16 per kg . By how much percent should a family reduce its consumption so as to keep the expenditure fixed?

A person walking 5/6 of his usual rate is 40 minutes late. What is his usual time?

One dog tells the other that there are two dogs in front of me. The other one also shouts that he too had two...

what is the number of integers between 101 and 199 which exactly divisible by 5 or 7?

If selling price is doubled, the profit triples, Find the profit percent,

The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 6...

3 pumps , working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty t...