28. A and B can finish a piece of work in 20 days .B and C
in 30 days and C and A in 40 days.
In how many days will A alone finish the job
(a) 48
(b) 34 2/7
(c) 44
(d) 45
Answer Posted / sagar rath
A+B ONE DAY WORK=1/20
B+C ONE DAY WORK=1/30
(A+B)-(B+C)=1/60=A-C
A-C=1/60-------------(1)
A+C=1/40-------------(2)
ON SOLVING BOTH WE GET A=48 DAYS.
Is This Answer Correct ? | 32 Yes | 4 No |
Post New Answer View All Answers
Sir iam going to write exam for the post of Officers under training in APSRTC. Please send me the model papers to my mail ganjiramji@gmail.com
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 sum of money becomes 2.5 times itself at 12.5% simple interest p.a. What should be the period of investment to get this much return?
A farmer has a farm square of 100 sq.m a cow is tied at one and with a rope of 10m length.assume pi-3.what is the area of land the cow can graze.
It takes eight hours for a 600 km journey, if 120 km is done by train and the rest by car. It takes 20 minutes more, if 200 km is done by train and the rest by car. The ratio of the speed of the train?
the word unimpressive was given.they asked us to do change 1st & 2nd,3rd & 4th,so on.then they asked what will be 10th letter from right?
What is the smallest number by which 2880 must be divided in order to make it into a perfect square ?
dear sir I need ordance factories non technical model question paper so pls send me the model paper my E-mail Id is sakthisaa@gmail.com
Sum of 5 consecutive numbers is 35. How many of the numers are prime:
There are 5 questions based on a murder story.the questions concentrate on the seating arrangements of people mentioned.
If a ball falls from 16 feet takes 4 seconds. How much time it will take when falls fron 64 feets.
If "PROMPT" is coded as QSPLOS ,then "PLAYER" should be?
Tata Tea cost rupees 95 per kg, Red label costs rupees 100 per kg and Lipton cost rs 70 per kg. How many kgs of each should be blended to produce 100 kg mixture worth Rs.90 per kg, give that the quantity of Red label and Lipton are equal.
A beats B by 10 meters and B beats C by 15 meters the A beats C by
quants,logical,verbal