g--Ayer Alfredo dio 3 vueltas a un circuito de \( 2,385 \mathrm{~km} \) y hoy ha dado 2 vueltas a otro circuito de \( 4,6 \mathrm{~km} \) ¿Cuántos kilómetros ha recorrido hoy más que ayer?

Para realizar una excursión con 140 alumnos, se han necesitado 4 autobuses. Si para otra excursión hay apuntados 245 alumnos, ¿cuántos autobuses del mismo tipo habrá que contratar?

\( 0.8 \% \) of 150 is what number?

14. A shipping and handling fee of \( \$ 35.00 \) is charged to all furniture orders over \( \$ 250 \). If the order is \( \$ 437.50 \), what percent is the shipping and handling fee?

\( \frac{3}{2}.\frac{1}{4}.\frac{2}{6} \)

Ron, Sue and Bob play on the same soccer team. Ron has played 19 minutes in total. Sue has played 15 minutes in total. Bob has played 20 minutes in total. Each pair has played 5 minutes together. All three of them have played at the same time for 3 minutes. How many minutes in total did the team have at least one of them playing.