Interested to Buy Any Domain ? << Click Here >> for more details...
Grass in lawn grows equally thick and in a uniform rate. It
takes 24 days for 70 cows and 60 days for 30 cows to eat
the whole of the grass.
How many cows are needed to eat the grass in 96 days?
- 3 Answers
- 22663 Views
- Anna University, CTS, Infosys, I also Faced
- E-Mail Answers
Answer Posted / guest
20 cows
g - grass at the beginning
r - rate at which grass grows, per day
y - rate at which one cow eats grass, per day
n - no of cows to eat the grass in 96 days
From given data,
g + 24*r = 70 * 24 * y ---------- A
g + 60*r = 30 * 60 * y ---------- B
g + 96*r = n * 96 * y ---------- C
Solving for (B-A),
(60 * r) - (24 * r) = (30 * 60 * y) - (70 * 24 * y)
36 * r = 120 * y ---------- D
Solving for (C-B),
(96 * r) - (60 * r) = (n * 96 * y) - (30 * 60 * y)
36 * r = (n * 96 - 30 * 60) * y
120 * y = (n * 96 - 30 * 60) * y [From D]
120 = (n * 96 - 1800)
n = 20
Hence, 20 cows are needed to eat the grass in 96 days.
| Is This Answer Correct ? | 77 Yes | 19 No |
Post New Answer View All Answers
Complete the series 2, 7, 24, 77,__ (hint: 2*12= 24, 7*11= 77, therefore 24*10= 240)
In which year will the 21st century begin?
what can you contribute to the fiscal commission?
There is a lucky draw held every day. If there is a winning number eg. 1876, then all possible numbers like 1867 ,1687,1768 etc are the numbers that match irrespective of the position of the digits. Thus all these numbers qualify fr the lucky draw prize. Assume there is no zero digit in any numbers. Write a program to show all the possible winning numbers if a "winningnumber" is passed as an argument to the function. i want a solution in c/c++ language
An apple seller is having some apples. He is selling half of the apple what he has plus half the apple to the first customer. In the same way he sells the remaining apple to 7 customers. After selling to 7 customers, he has no apples with him.
4 cows are there at the four corners of a square. if the radius of the rope is 1 and lenth of one side of the square is 14, find the area along the square which the cow cannot gaze.
If x,y,z are three consecutive natural numbers, which of the following numbers should be x+y+z
A cubical rectangular bar has the dimensions with the ratio 5 : 4 : 3. Its volume is 7500. What is the surface area of the bar?
There are 19 red balls and one black ball . Ten balls are put in one jar and the remaining 10 are put in another jar. what is the possibility that the black in the right jar.
Find the next series: AD DP PL LV ?
205 of 6 liter solution and 60% of 4 liter solution is mixed What percentage of the mixture of solution
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?
THERE ARE 3 MIXTURES WHEN MIXED IN THE RATIO OF 3:4:5 PRICE WAS 240.WHEN MIXED WITH 6:4:9 PRICE WAS 340.WHAT'S THE PRICE WHEN MIXED IN 5:6:8 RATION PRICE IS
In a company 30% are supervisors and 40% employees aare male if 60% of supervisors are male what is the probability that is randomly choosen employee is a male or female?
Denominator is 4 greater than numerator if 10 is added to Denominator,the fraction becomes 1/8.what is the fraction.
