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Dimdima

Online Children's Magazine from India

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Crazy Fly 

Two trains, 200 kilometres apart, are moving towards each other, each going at a speed of 50 kmph.
A crazy fly, starting on the front end on one of the trains flies back and forth between them at the rate of 75 kmph. It touches one train returns to the other and flies back, doing this continuously till the trains collide, crushing the insect.
What is the total distance the fly travelled before it got crushed?
The answer can be worked out in a jiffy, without using pen and paper.


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Dimdima is the Sanskrit word for ‘drumbeat’. In olden days, victory in battle was heralded by the beat of drums or any important news to be conveyed to the people used to be accompanied with drumbeats.

Dimdima.com

Bharatiya Vidya Bhavan
K. M Munshi Marg,
Chowpatty, Mumbai - 400 007
email : editor@dimdima.com

Dimdima Magazine

Bharatiya Vidya Bhavan
505, Sane Guruji Marg,
Tardeo, Mumbai - 400 034
email : promo@dimdima.com

About

Dimdima.com, the Children's Website of Bharatiya Vidya Bhavan launched in 2000 and came out with a Printed version of Dimdima Magazine in 2004. At present the Printed Version have more than 35,000 subscribers from India and Abroad.

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