(a) Vehicles produced in February = 40 + 25 + 30 = 95~(b) Fraction of the vehicles in February that were cars = \(\frac{40}{95} = \frac{8}{19}\)
(c) Total number of buses from January to March = 20 + 30 + 50 = 100
(d) Ratio of lorries in February to that in March = \(25 : 35 \equiv 5 : 7\).

~(c) Total number of buses from January to March = 20 + 30 + 50 = 100
(d) Ratio of lorries in February to that in March = \(25 : 35 \equiv 5 : 7\).

~(d) Ratio of lorries in February to that in March = \(25 : 35 \equiv 5 : 7\).

