PAIR OF LINEAR EQUATIONS IN TWO VARIABLES: Like  the  crest  of a  peacock so  is  mathematics  at the  head of all knowledge.

Example

At a certain time in a deer park, the number of heads and the number of legs of deer and human visitors were counted and it was found there were 39 heads & 132 legs. Find the number of deer and human visitors in the park.

(Ans:27,12)

Ans: Let the no. of deers be x

And no. of humans be y

ASQ :

x + y = 39                    ---- (1)

4 x + 2 y = 132           ----- (2) Multiply (1) and (2)

On solving, we get ...

x = 27  and y= 12

∴ No. of deers = 27  and No. of humans = 12

Posted Date: 4/8/2013 2:18:14 AM | Location : United States

Ask an Expert

Related Discussions:- Pair of linear equations in two variables, Assignment Help, Ask Question on Pair of linear equations in two variables, Get Answer, Expert's Help, Pair of linear equations in two variables Discussions

Write discussion on Pair of linear equations in two variables
Your posts are moderated

Write your message here..

Related Questions

Correlation coefficient, Correlation coefficient - These are numerical... Correlation coefficient - These are numerical measures of the correlations existing between the independent and the dependent variables - These are better measures of corre

Formular for x and y, I have a simple right angle triangle. All I am given... I have a simple right angle triangle. All I am given is h (the hypotenuse) and that ratio of x:y is 2:3. What is the formula to find x and y in terms of h?

Find where the breakdown occurred and his original speed, A cyclist, after ... A cyclist, after riding a certain distance, stopped for half an hour to repair his bicycle, after which he completes the whole journey of 30km at half speed in 5 hours.  If the bre

An even function, Assume that   i)  Determine all the roots of f... Assume that   i)  Determine all the roots of f(x) = 0. ii)  Determine the value of k that makes h continuous at x = 3. iii)  Using the value of k found in (ii), sh

Multiplying fractions involving negative numbers, Q. Multiplying Fractions ... Q. Multiplying Fractions Involving Negative Numbers? Ans. If you have only one negative sign, the result is still negative: If you have more than one, just remembe

Permutation and Combination, 20! 18! 20! 18!

Estimate the greatest possible number of calculators, Martha has $20 to spe... Martha has $20 to spend and would like to buy as several calculators as possible along with the money. The calculators that she needs to buy are $4.50 each. How much money will she

Trigonometry, Prove: 1/cos2A+sin2A/cos2A=sinA+cosA/cosA-sinA Prove: 1/cos2A+sin2A/cos2A=sinA+cosA/cosA-sinA

Find the interval of validity, Solve the subsequent IVP and find the interv... Solve the subsequent IVP and find the interval of validity for the solution. y' + (4/x) y = x 3 y 2 ,       y(2) = - 1,  x > 0 Solution Thus, the first thing that we re

Finite population correction factor or fpcf), Finite Population Correction ... Finite Population Correction Factor Or Fpcf) If a specified population is relatively of small size and sample size is more than 5 percent of the population then the standard er