Question
Usha was travelling from Point P to Point Q at a constant speed of 90 km/h. After 4 hours, she passed a convertible coming from the opposite direction. Usha travelled another 450 km to reach Point Q. At this point, the convertible was still 50 km from Point P. What is the average speed of the convertible?
3 m

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Usha was travelling from Point P to Point Q at a constant speed of 90 km/h. After 4 hours, she passed a convertible coming from the opposite direction. Usha travelled another 450 km to reach Point Q. At this point, the convertible was still 50 km from Point P. What is the average speed of the convertible?