Question

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?

• A. 8.1 m
• B. 7.95 m
• C. 8 m
• D. 8.05 m

Answer 1

The correct option is C

8 m

Let the 4th Jump distance be x

$\frac{8+8.15+8.12+x+7.98}{5}$ = 8.05

$\frac{32.25+x}{5}$ = 8.05

32.25 + x = 8.05 $\times$ 5 = 40.25

$\Rightarrow$ x = 40.25 - 32.25 = 8 m

$\therefore$ The 4th Jump distance is 8 m