A car averages 55 mph for the first 4 hours of a trip and
averages 70 mph for each additional hour. The average speed
for the entire trip was 60 mph. How many hours long is the trip?
- 1 Answers
- 6048 Views
- Accenture, I also Faced
- E-Mail Answers
Answer Posted / mohitkuldeep
let total time = x hrs
55*4 + 70*(x-4) = 60*x
10x = 60
x =6
answer is 6 hrs
| Is This Answer Correct ? | 16 Yes | 1 No |
Post New Answer View All Answers
There are 12 boys and 15 girls, How many different dancing groups can be formed with 2 boys and 3 girls. Which of the following fractions is less than 1/3?
a person went to a shop and asked for change for 1.15paise. but he said that he could not only give change for one rupee. but also for 50p,25p,10p and 5p. what were the coins he had
a man buy a liquid by 12 lts and the mixture is of 20% liquid in water then he makes it in 30% mixture then what is the % of liquid with water.
there are 3 nurses and they work altogether only once in a week. no nurse is called to work for 3 consecutive days. nurse 1 is off on tueseday,thursday and sunday. nurse 2 is off on saturday. nurse 3 is off on thursday, sunday. no two nurses are off more than once a week. find the day on which all the 3 nurses were on work.
a bus started from bus stand at 8.00am and after 30min staying at destination it returned back to the bus stand.the destination is 27 miles from the bus stand the speed of the bus 50percent fast speed at what time it returns to the bus stand.
If VXUPLVH is written as SURMISE, what is SHDVD?
The ratio of the length : breadth : height of a cuboid is 5 : 4: 3, and the volume is 7500. What will be its surface area ?
A motorcycle travels a certain length taking 7 hrs in the journey ahead, while returning, the increased speed of 12km/hr takes about 5 hrs. What was the length covered in this journey?
Find the missing number in the series: 2, 5, __ , 19 , 37, 75
Fallin height is proportional to square of the time. One object falls 64 cm in 2 sec. than in 6 sec. from how much height the object will fall?
There are 600 tennis players 4% wear wrist band on one wrist Of the remaining, 25% wear wrist bands on both hands How many players don't wear a wrist band?
if on a salary s per month, a tax of x% of the salary and another of r% of the salary is deducted what is the income.
Two trains are travelling at equilateral .Train A is travelling in the direction of earths spin.Other train B is travelling in opposite direction of earths spin.Which trains wheels will wear first?and why?
The perimeter of a rhombus is 52 units. One of its diagonal is 24 units.What is its second diagonals length?
A chain is broken into three pieces of equal lengths containing 3 links each. It is taken to a blacksmith to join into a single continuous one. How many links are to to be opened to make it ?
