The average of long Jump taken by an athlete is 8.05 m.
If his first 3 jumps are 8 m , 8.15 m and 8.12 m and his last jump is 7.98 m,
what will be his 4th jump distance?
8 m
Let the 4th Jump distance be x
8+8.15+8.12+x+7.985 = 8.05
32.25+x5 = 8.05
32.25 + x = 8.05 × 5 = 40.25
⇒ x = 40.25 - 32.25 = 8 m
∴ The 4th Jump distance is 8 m