Saturday, 16 March 2019

A train moving with 3/5 of its normal speed reaches its destination 2 1/2 hrs. late. The time required to reach its destination if it moves with its normal speed is

A train moving with 3/5 of its normal speed reaches its destination 2 1/2 hrs. late. The time required to reach its destination if it moves with its normal speed is 
(a) 3 hrs. 30 mins. 
(b) 3 hrs. 45 mins 
(c) 3 hrs. 40 mins. 
(d) 3 hrs. 35 mins.