A lorry averages 55mph for the first 4 hours of a trip and
averages 70 mph for each additional hour. The average
speed for entire trip was 60 mph. How many hours long is
the trip?
a)14 b)12 c)11 d)8 e)6
- 3 Answers
- 4987 Views
- I also Faced
- E-Mail Answers
Answer Posted / monu jain
answer is 6 hours and 360 miles
55*4 = 220 miles
and as the average speed is 60 then the total distance
should be multiple of 60 only
each additional hour has a average of 70 means we will add
70 in 220 till multiple of 60 is not coming
then 220+70 = 290/6 =48.3 not multiple
then 220+70+70 = 360/6 = 60 multiple
means total distance is of 360 kms and by average speed of
60 it will consume 360/60 = 6 hours
| Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
Number of digits with a 2 in them between 100 and 400?
How many mashes are there in a sq. m of wire gauge. Each mesh being 8mm long X 5mm width
A person has his own coach&whenever he goes to railway station he takes his coach.One day he was supposed to reach the railway station at 5 O'clock.But he finished his work early and reached at 3 O'clock. Then he rung up his residence and asked to send the coach immediately. He came to know that the coach has left just now to the railway station.He thought that the coach has left just now to the railway station.He thought that he should not waste his time and started moving towards his residence at the speed of 3min/hr.On the way,he gets the coach and reaches home at 6 o'clock.How far is his residence from railway station.
A car has run 10000 miles using 5 tyres interchangably,To have a equal wornout by all tyres how many miles each tyre should have run. answer 4000 miles/tyre
There was a ques on work something like 2 typists type 2 papers in 4 hrs then in how much time will 5 typists take or something like that.
From 5 different green balls, four different blue balls and three different red balls, how many combinations of balls can be chosen taking at least one green and one blue ball?
A son and father goes for boating in river upstream . After rowing for 1 mile son notices the hat of his fathe falling in the river. After 5 min. he tells his father that his hat has fallen. So they turn around and are able to pick the hat at the point from where they began boating after 5 min. Tell the speed of river.
1) 1)difference between ip and non ip protocol.
One day the Finance minister decides that the country should have only 33 paise and 56 paise.If there are two traders having enough change in the two denominations, what is the minimum amount for which they can transact?
2. Masi specialises __ plesent ,well balanced wines into, about ,in, with 3. By the time I arrived __ the pub she all ready left in, on , at, into 4. erbiage the act of doing something the use many words witout nessecity a vegitable non of the above
The crew of a rowing team of 8 members is to be chosen from 12 men (M1, M2, …., M12) and 8 women (W1, W2,…., W8), such that there are two rows, each row occupying one the two sides of the boat and that each side must have 4 members including at least one women. Further it is also known W1 and M7 must be selected for one of its sides while M2, M3 and M10 must be selected for other side. What is the number of ways in which rowing team can be arranged.
One guy (some name) has Rs. 100/- in hand. He has to buy 100 balls. One football costs Rs. 15/, One Cricket ball costs Re. 1/- and one table tennis ball costs Rs. 0.25 He spend the whole Rs. 100/- to buy the balls. How many of each balls he bought?
The difference between two numbers is 1365. When you divide the larger number with the smaller number the quotient is 6 and remainder is 15. What is the smaller number?
WHAT IS THE NUMBER OF ZEROS AT THE END OF THE PRODUCT OF THE NUMBERS FROM 1 TO 100
Ram starts from A walking 2 km North and turns right and walks 4 km and turns right again and walks 4 km and turns right again and walks 4 km and meets Radha at Bwalking in the opposite direction to Ram . Which direction does Ram walk after the first turn?
