Question

За какое время израсходует двигатель весь бензин из бака,если он: а)за 3ч расходует 12% всего бензина; б)за 3 ч расходует 4/15всего бензина; в)за 6 ч расходует 0,24 всего бензина?

Answer 1

a) За 3ч - 12%; Х - 100% Тогда Х= 3*100/12 = 25 часов (за 25 часов израсходует полный бак)

б) За 3ч - 4/15 всмего бензина. за Х часов - 1  (весь бензин). Х = 11 и 1/4 часа

в) За 6ч - 0,24 всего бензмна. за Х часов - 1 (весь бензин) Х = 25 часов

Answer 2

Calculation of Time to Exhaust the Fuel Tank

To calculate the time it takes for the engine to consume all the fuel in the tank, we need to determine the rate at which the engine consumes fuel. Let's analyze each scenario:

a) If the engine consumes 12% of the total fuel in 3 hours: - This means that in 3 hours, the engine consumes 12% of the total fuel in the tank. - To find the time it takes to exhaust the entire tank, we can set up a proportion: - 12% of the fuel is consumed in 3 hours. - 100% of the fuel will be consumed in x hours (which is what we want to find). - We can solve this proportion by cross-multiplying and solving for x: - 12/3 = 100/x - 12x = 300 - x = 300/12 - x = 25 - Therefore, it will take the engine 25 hours to exhaust the entire fuel tank.

b) If the engine consumes 4/15 of the total fuel in 3 hours: - This means that in 3 hours, the engine consumes 4/15 of the total fuel in the tank. - Again, we can set up a proportion to find the time it takes to exhaust the entire tank: - 4/15 of the fuel is consumed in 3 hours. - 100% of the fuel will be consumed in x hours. - Solving this proportion: - (4/15)/3 = 100/x - (4/15) * x = 300 - 4x = 300 * 15 - x = (300 * 15)/4 - x = 1125/4 - x = 281.25 - Therefore, it will take the engine approximately 281.25 hours to exhaust the entire fuel tank.

c) If the engine consumes 0.24 of the total fuel in 6 hours: - This means that in 6 hours, the engine consumes 0.24 of the total fuel in the tank. - Once again, we can set up a proportion to find the time it takes to exhaust the entire tank: - 0.24 of the fuel is consumed in 6 hours. - 100% of the fuel will be consumed in x hours. - Solving this proportion: - 0.24/6 = 100/x - 0.24 * x = 600 - x = 600/0.24 - x = 2500 - Therefore, it will take the engine 2500 hours to exhaust the entire fuel tank.

Summary: a) The engine will exhaust the entire fuel tank in 25 hours. b) The engine will exhaust the entire fuel tank in approximately 281.25 hours. c) The engine will exhaust the entire fuel tank in 2500 hours.

Please note that these calculations assume a constant rate of fuel consumption by the engine throughout the entire duration.