In a row of 40 children facing north, Satish is eighth to the right of Ajay. If Ajay is 18th from the right, what is Satish's position from the left?

Explanation

Ajay is 18th from the right in a row of 40, so he is 23rd from the left (40 - 18 + 1 = 23). Satish is eight places to Ajay's right, so Satish is 31st from the left.