Ineed your on 6-8 reply to my question

Qns 6:

Box A and Box D as it is the two heaviest boxes.

Qns 7:

Average score after 6 rounds> 81

Total score> 81 × 6

= 486

First 5 rounds of scores> 78, 86, 82, 81 and 82

Sixth score> 486-(78+86+82+81+82)

= 77

Qns 8:

Average speed: total distance ÷ total time taken

Total Distance travelled: Point A to Point B and back to Point A> 6 +6 =12 m

Total Time taken> 2h + 1h

= 3h

Average speed> 12 ÷ 3

= 4mph

5x+10 is the correct one

hope this