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Mathematics, 15.07.2020 01:01 anthmel07

On his outward journey, Ali travelled at a speed of s km/h for 2.5 hours. On his return journey, he increased his speed by 4 km/h and saved 15 minutes. Find Ali's average speed for the whole journey.

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On his outward journey, Ali travelled at a speed of s km/h for 2.5 hours. On his return journey, he...

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