A man travels from A to B at 4 mph over a certain journey
and returns over the same route to A, at 5 mph. What is his
average speed for the journey?
Answer Posted / suresh
let, x be man travel from A to B and
Y be man travel from B to A then
Average speed is (2XY)/(X+Y)
therefore ans = (2*4*5)/(4+5)
= 4.44mph
| Is This Answer Correct ? | 93 Yes | 4 No |
Post New Answer View All Answers
What is the distance travelled by a ball that falls from a height of 8 mts and each time it bounces half the distance back?
A ship started from port and moving with I mph and another ship started from L and moving with H mph. At which place these two ships meet ?
Find the total number of squares in 1/4 of chess board ?
What is the value of a property, which has been insured at the rate of 1/6% of its value, if the annual premium paid on it is Rs. 83.33 (in Rs.)?
Factorize y**2 + 8y - 48 =0
8 persons A,B,C,D,E,F,G,H are sitting in a round dining table.some arrangement was given and position of H was asked.I don't remember the question exactly.
An article sold at a profit of 20% if both the cost price and selling price would be Rs.20/- the profit would be 10% more. What is the cost price of that article?
Find the next series: AE BH CM DU?
Numbers of animals is 11 more than the number of birds. If the number of birds were the number of animals and number of animals were the number of birds( ie., interchanging number s of animals and birds.), the total number of legs get reduced by one fifth(1/5). How many no. of birds and animals were there?
in pure milk if 20% replaced by water and in this again 20% is replaced by water and again 20% is replaced by water then what is the praportion of milk in that mixture
A clock with the hours round the face in Roman block numbers, as illustrated in the sketch fell down and the dial broke into four parts....
A man collects cigarette stubs and makes one full cigarette with every 8 stubs.If he gets 64 stubs how many full cigarettes can he smoke.
In 3.5 Kg rod , there is 74% silver. If it is alloyed with a 0.5 Kg rod, the % of silver goes up to 84%. The percent of silver in 0.5 Kg rod?
In a survey of town of Wasco, it was found that 65% of the people surveyed watched the news on television, 40% read newspaper, and 25% read a newspaper and watched the news on television. What percent of the people surveyed neither watched the news on the television nor read a newspaper?.
Find the product of the prime numbers between 1-20