Subject
Bank Exam
Topic
Agrani Bank 2013 Senior Officer (Cancelled)
A motorist travels to a place 150 km away at an average speed of 50 km and returns at 30 km per hour. What is his average speed for the whole journey in km per hour?
A motorist travels to a place 150 km away at an average speed of 50 km and returns at 30 km per hour. What is his average speed for the whole journey in km per hour?
ক)
35খ)
37গ)
37.5ঘ)
40Explanation
We know that, Speed = Distance/Time taken Thus, Time taken = Distance/Speed While Travelling, Time taken = 150/50 = 3 hours While Returning, Time taken = 150/30 = 5 hours Total time taken during the journey = 3 + 5 hours = 8 hours And, Total distance covered during the journey = (150 + 150) km = 300 km Thus Speed = 300/8 = 37.5 km/hRelated questions
Select a word that may be considered synonym of “inadvertent”.“অনিল” শব্দের অর্থ কি?'দশে মিলে করি কাজ' - বাক্যটিতে 'দশে' কোন কারকে কোন বিভক্তি?“শিরে সংক্রান্তি” –র সঠিক অর্থ কোনটি?A water reservoir is 1/5thfull and requires 20 liters more to make it 3/5thfull. What is the capacity of the reservoir ( in liters)?The number of marbles in Amin’s collection is 80% of the number in Rahim’s collection. If Rahim has 80 more marbles than Amin, how many marbles do they have altogether?If 3a+5b=10 and 5a + 3b=30, what is the average (arithmetic mean) of a and b?Ms. Selina____rather not invest that money in the stock market.