Question

riya leaves her home to get her friends home she walks at 4 km per hour at the same time her friend siya leaves her house for riya house and walks at 3 km per hour if they live 21 km apart how long will it take to riya and siya on the way

Answer 1

Riya will meet Siya after covering a distance of 12 km.
&
Siya will meet Riya after covering a distance of (21-12) = 9 km.

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