If Four goats and two sheep’s cost Rs.2500, while six goats and five sheep’s cost Rs.6000. Find the cost of one goat and one sheep separately

Abaseball team drinks 10/4 gallons of water during a game. which mixed number represents the gallons of water consumed? a) 1 1/2 gallons b) 2 1/2 gallons c) 2 3/4 gallons d) 3 1/2 gallons