Jacod begins painting at 12:00 noon. At 12:30 P.M. he estimate that 13 gallons of paint are left, and at 3:30 he estimates that 4 gallons of paint remains. If the paint is being used at a constant rate, how many gallons of paint did Jacod have when he started the job?

Ravi can paint (3)/(7) of a house in one day. If he continues working at this rate, how many days will he take to paint the whole house?

To make green paint, a painter mixes yellow paint and blue paint in the ratio of 3:2. If he used twelve liters of yellow paint, how much blue paint did he use?

Anil had to paint a wall. He painted 25% of the wall. Umar came and painted 30 sq. m of the wall. If 60% of the wall is left unpainted, how many square metres of wall did Anit paint?

Amit had to paint a wal. He painted 20% of the wall. Ahmed came painted 75sq.m of the wall. If 55% of the wall is left unpainted, how many square metres of the wall did Amit paint?

Last month Joe the painter painted many rooms. He used 3 coats of paint on one third of the rooms he painted. On two fifths of the remaining rooms he used 2 coats of paint, and he only used 1 coat of paint on the remaining 24 rooms. What was the total number of coats of paint Joe painted last month?

Amit took 3/4 hour to paint a table and 1/3 hour to paint a chair .How much time did he take in all?

Gasoline has an enthalpy of combustion 24000 kJ/mol gallon. When gasoline burns in an automobile engine, approximately 30% of the energy released is used to produce mechanical work. The remainder is lost as heat transfer to the engine's cooling system. As a start on estimating how much heat transfer is required, calculate what mass of water could be heated from 25^(@)C to 75^(@)C by the combustion of 1.0 gallon of gasoline in an automobile? (Given : C(H_(2)O)=4.18 J//g^(@)C )

Gasoline has an enthalpy of combustion 24000 kJ/mol gallon. When gasoline burns in an automobile engine, approximately 30% of the energy released is used to produce mechanical work. The remainder is lost as heat transfer to the engine's cooling system. As a start on estimating how much heat transfer is required, calculate what mass of water could be heated from 25^(@)C to 75^(@)C by the combustion of 1.0 gallon of gasoline in an automobile? (Given : C(H_(2)O)=4.18 J//g^(@)C ) a) 34.45 kg b) 80.383 kg c) 22 kg d) 224 kg