1.These log boats do not go very far. If the wind is helpful, then travel about 4 km in one hour. (а)How long will they take to go a distance of 10 km?
Ans. In 1 hour the boat travels 4 km Hence, in 2 hours the boat will travel 2 x 4 = 8 km And in 1/2 hour the boat will travel 4/2 = 2 km So, in 2 and a half hour the boat will travel 8 + 2 = 10 km.
