gx takes 3 hows more than Yfo walk 30 km. gítil x double theaca, he i

1.	gx takes 3 hows more than Yfo walk 30 km. gítil x double theaca, he is ahead by Y by i hous. Find their speads woelkingety
Answer» let speed of X be = x km/hrand speed of Y = y km/hrA/Q 30/y + 3 = 30/x and 30/y - 3/2 = 30/2x now put 1/x= p and 1/y = q so equations become 30q + 3 = 30p ⇒ 10p-10q = 1......(1)and 30q - 3/2 = 15p ⇒ 10q - 1/2 = 5p⇒ 20q - 1 = 10 p ⇒ 20q -10 p = 1....(2) solving (1) and (2) gives p =3/10 and q = 1/5 so x = 10/3 km/hr y = 5 km/hr

gx takes 3 hows more than Yfo walk 30 km. gítil x double theaca, he is ahead by Y by i hous. Find their speads woelkingety

Answer»

let speed of X be = x km/hrand speed of Y = y km/hrA/Q 30/y + 3 = 30/x and 30/y - 3/2 = 30/2x now put 1/x= p and 1/y = q

so equations become

30q + 3 = 30p ⇒ 10p-10q = 1......(1)and 30q - 3/2 = 15p ⇒ 10q - 1/2 = 5p⇒ 20q - 1 = 10 p ⇒ 20q -10 p = 1....(2)

solving (1) and (2) gives p =3/10 and q = 1/5

so x = 10/3 km/hr y = 5 km/hr