In a group of cows and hens, the number of legs are 14 more than twice the number of heads. The number of cow is:

Challenger App

No.1 PSC Learning App

★

1M+ Downloads

Get App

In a group of cows and hens, the number of legs are 14 more than twice the number of heads. The number of cow is:

C10

D12

Answer:

B. 7

Read Explanation:

Let the number of cows be x and the number of hens be y Total Number of Heads = 1 for cow + 1 for hen = (1x+1y )Heads Total Number of Legs = Cows has 4 + Hen has 2 = (4x+2y)Legs Then 4x+2y=2(1x+1y)+14 4x+2y=2x+2y+14 => 2x=14 x=7

Related Questions:

The given pie chart shows the breakup (in percentage) of monthly expenditure of a person.The central angle made by the sector of expenditure on Fuel is how much (in degrees) if the ratio of the expenditure on Fuel and Clothes is 4 : 3 respectively?

ഒരാൾ 50 മീറ്റർ ഉയരമുള്ള ഒരു തൂണിൽ കയറാൻ ശ്രമിക്കുന്നു. ഒരു മിനിട്ടിൽ അയാൾ 5 മീറ്റർ മുകളിലേക്ക് കയറുമെങ്കിലും 2 മീറ്റർ താഴോട്ടിറങ്ങുന്നു. എങ്കിൽ എത്രാമത്തെ മിനിട്ടിൽ അയാൾ മുകളിലെത്തും?

How many prime factors do 16200 have?

In a garrison of 10 soldiers, there was enough food to last for 28 days. After 6 days some more soldiers joined the garrison such that the food lasted for only 10 days. Find the number of soldiers that joined the garrison after 6 days.

No.1 PSC Learning App

In a group of cows and hens, the number of legs are 14 more than twice the number of heads. The number of cow is:

B. 7

Read Explanation:

How many prime factors do 16200 have?

In a garrison of 10 soldiers, there was enough food to last for 28 days. After 6 days some more soldiers joined the garrison such that the food lasted for only 10 days. Find the number of soldiers that joined the garrison after 6 days.

100-ന് താഴെയായി ഒരേസമയം പൂർണവർഗവും പൂർണ ഘനവുമായ (cube ) എത്ര സംഖ്യകളുണ്ട് ?