Maths A takes 2 hours more than b to cover a distance of 30 km. If a doubles his speed, then b will take 1 hour less to cover this distance. What is the speed of a?
| Q.201651: A takes 2 hours more than b to cover a distance of 30 km. If a doubles his speed, then b will take 1 hour less to cover this distance. What is the speed of a? |
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