BMAT 2018 · Question 12 · Logic

Any railway customer who has to wait for a train that is delayed by more than 20 minutes is entitled to a refund of $6. A n yo n e w h o ha s t o w ai t f or a t r ain t ha t i s d e l a ye d b y m ore t han 10 min u t es b u tl ess t han 20 min u t es i se n t i tl e d t o a re f u n d o f$ 4. The table below shows the scheduled arrival time and the actual arrival time for 10 customers’ trains.

All of the customers who were entitled to a refund did receive the refund from the railway company. How much money did the railway company have to pay out in total to these customers?