Question

17) A truck travelled 420 km in 12 hours. How
much time will it take to cover 630 km?
18) If it takes 3 hours 20 minutes to paint 5
chairs, how long will it take to paint 8
chairs?
19) If 348 g sugar is needed to make 12
gulab jamuns, how much sugar is
needed to make 20 gulab jamur
20) If 5 copies of a book weigh 21 kg, how
much will 12 copies of the book weigh​

Answer 1

20) 5/21=4.2

4.2*12=50.4 kg