Question

A car travels 5 1/4 km north, then 2 1/2 km west and finally 4 3/8 km north. What is the total distance travelled in kilometers? What fraction of the journey was travelled in a northerly direction​
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Answer 1

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Step-by-step explanation:

A car travels 51 / 4 km to the north

and again 43/8 to the north

So the total distance travelled by northly direction = 51/4 + 43/8

= The LCM of 4 and 8 is 8

= 102/8 + 43/ 8

= 145/8

So the total distance travelled in northly direction is 145/8

then A.T.Q

The total distance travelled by both north and west direction is = 51/4+21/2+43/8

= The LCM of 8,2 and 4 is 8

= 102/8+84/8+43/8

= 229/8

So, the total distance travelled in both the north and west direction is 229/8 km