Answer: 8 more questions.
Step-by-step explanation:
He has already answered 6 questions worth 5 points so 6 x 5 = 30
Subtract 30 from 70 : 70 - 30 = 40
He needs 40 more points to get the desired score.
40 ÷ 5 = 8
So he needs to answer 8 more questions, each worth 5 points to get the desired score.
