exam Maths Puzzle Numerical Ability

1)A jogger starts a course at a steady rate of 8 kph.Five minutes later,a second jogger starts the same course at 10 kph.How long will it take the second jogger to catch the first?

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exam Other Question
Verify that (sec θ/sin θ)(cot θ/csc θ)= csc θ is an identity.

Thank You Please help me with this problem.

6m/7+1/2=1/2