John ran 1 block in 30 seconds and for second block he took 50 seconds. He ran 10 blocks in total. How much time he took to run all 10 blocks in total if he ran with the same pattern? - Clay6.com, a Free resource for your JEE, AIPMT and Board Exam preparation

John ran 1 block in 30 seconds and for second block he took 50 seconds. He ran 10 blocks in total. How much time he took to run all 10 blocks in total if he ran with the same pattern?