the numbers are in the ratio 3:4.if each is increased by 10 the ratio between the new numbers so formed is 5:7.find the original numbers
Answers
Answered by
0
X : Y = 3 : 4 4 X = 3 Y X = 3/4 Y
(X+10) / (Y+10) = 5 / 7
7 (X +10) = 5 (Y+10)
7 X - 5 Y = 50 -70 = -20
7 * 3/4 Y - 5 Y = -20
(21 - 20) Y = - 80
Y = - 80
X = - 80 * 3/4 = - 60
(X+10) / (Y+10) = 5 / 7
7 (X +10) = 5 (Y+10)
7 X - 5 Y = 50 -70 = -20
7 * 3/4 Y - 5 Y = -20
(21 - 20) Y = - 80
Y = - 80
X = - 80 * 3/4 = - 60
Similar questions