The average mark scored by boys in History is 80 and the average mark scored by girls in History is 90. The average mark in History for the whole class is 82. The number of boys in the class is (A) and the number of girls in the class is (B). Which of the following options will come in the place of (A) and (B) respectively?
(I) 200 and 50
(II) 240 and 60
(III) 280 and 70
(IV) 240 and 50
1
Only I and II
2
Only I, II and IV
3
Only II, III, and IV
4
Only I, II, and III
5
Only I, III, and IV