Find the number of Red apples sold by ‘S’

Answer the questions based on the information given below.   Four fruit vendors sold two types of apples
i.e., green apples and red apples. Green apples sold by ‘P’ are 100 less than red apples sold by him. Total apples sold by ‘Q’ are 1080 which is 20% more than that by ‘P’ and ratio of green apples sold by ‘P’ and ‘Q’ is 2:3 respectively. Average number of apples sold by ‘R’ and ‘S’ is 680 and the ratio of green apples to red apples sold by ‘S’ is 5:7. Red apples sold by ‘R’ is 20% less than that by ‘Q’ and 50% more than green apples sold by him.