Question

a plan left 30mins later than it's scheduled time .inorder to reach the destination 1500km away in time ,it had to increase it's speed by 100km/he from usual speed .find it's usual speed??​

Answer 1

here is step by step solution.hope it will help you

Answer 2

Time taken to cover 1500 km = 1500/x hr. Hence, the usual speed of plane is 500 km/hr.