Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • One goat costs 50 paise, one horse costs 3 rupees, and one elephant costs 10 rupees. The number of animals and the cost both should be 100. How?

One goat costs 50 paise, one horse costs 3 rupees, and one elephant costs 10 rupees. The number of animals and the cost both should be 100. How?

Answers (1)

best_answer

eginarrayl extSuppose no. of goat, horse and elephant be X,Y extand Z extrespectively.\ extSo according to question, \ exttotal cost of goat =frac12 imes X extrupee\ extAccording to question, total cost of goat = frac12 imes X extrupee\ exttotal cost of horse =3Y\ extand cost of elephant = 10Z\ extSo,\ fracX2+3Y+10Z=100......left(1 ight)\ extAnd\ X+Y+Z=100......left(2 ight)\ extEliminating the above equations we will get\ 5Y+19Z=100\ left( ext and now taking some value Z(0,1,2,3,4,5...... ight) extin a way that Y should come as whole no.\ extso we can conclude for \ Z=5,Y=1 ext(No. of the animal should be the positive whole no.)\ extnow putting value of Z extand Y ext in eq. 1\ extwe will get X=94\ extHence no. of goat = 94, no. of horse = 1 and elephant will be 5\ \ endarray

Posted by

Deependra Verma

View full answer

Similar Questions

Latest Question