Question 141
Alberto, Barbara and Ciro meet one day to prepare ravioli for a charity dinner in support of the mathematical olympiads. First of all they decide to split the working hours equally between the morning and the afternoon, and of course they work at the same time and for the same amount of time. Alberto is very reliable: he makes 90 ravioli per hour for the whole working day. Barbara makes 110 ravioli per hour during the morning, but in the afternoon she is more distracted and makes 70 ravioli per hour. Ciro makes $2 / 3$ of his ravioli at a rate of 140 ravioli per hour and the last third at only 50 ravioli per hour. Who made the most ravioli at the end of the day?
(A) Alberto
(B) Barbara
(C) Ciro
(D) Alberto and Barbara, in equal number.
(E) Alberto and Ciro, in equal number.
(A) Alberto
(B) Barbara
(C) Ciro
(D) Alberto and Barbara, in equal number.
(E) Alberto and Ciro, in equal number.