spain-selectividad 2023 QA.1

spain-selectividad · Other · selectividad__madrid_matematicas-II 2.5 marks Simultaneous equations
At a construction site, to transport the earth extracted for the construction of a building's foundations, three different types of trucks are used: A, B, and C. Type A trucks have a capacity of 14 tonnes, type B trucks have 24 tonnes, and type C trucks have 28 tonnes. One more type A truck would be needed to equal the number of remaining trucks. 10\% of the capacity of all type B trucks equals one-seventh of the capacity of the largest tonnage trucks. Today, with each truck making a single trip at maximum capacity, 302 tonnes of earth have been extracted from the site. How much earth has been transported today by trucks of each type?
At a construction site, to transport the earth extracted for the construction of a building's foundations, three different types of trucks are used: A, B, and C. Type A trucks have a capacity of 14 tonnes, type B trucks have 24 tonnes, and type C trucks have 28 tonnes. One more type A truck would be needed to equal the number of remaining trucks. 10\% of the capacity of all type B trucks equals one-seventh of the capacity of the largest tonnage trucks. Today, with each truck making a single trip at maximum capacity, 302 tonnes of earth have been extracted from the site. How much earth has been transported today by trucks of each type?