Question

Two cars starts at the sametime from one pointand move along two roads at right angles to each other. their speed are 36 km/h and 48 km/h respectively. after 15 second the distance between them will be ?
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Answer 1

Answer:

648 km

Explanation:

Distance travelled by the 1st car

$(36 \times 54)km \\ = 1944 \: km$

Distance travelled by the 2nd car

$(48 \times 54)km \\ = 2592 \: km$

Distance between the cars after 15 seconds

= (2592 - 1944) km

= 648 km