Question

Can u please answer this question

Answer 1

One Way:
We can change the mixed number to a decimal for comparing.

$1\frac{1}{4}$ m = $\frac{5}{4}$ m = 1.25 m

1.4 m     >    1.25 m
Darren   >     Luke

Darren's jump was higher by (1.4-1.25) 0.15 m

Or another way change the decimal to a fraction and the mixed to an improper fraction too.

$1\frac{1}{4}$ = $\frac{5}{4}$ (Luke)
1.4 = $\frac{7}{5}$                               (Darren)
We need a common denominator to compare
$\frac{5*5}{4*5}$       (Luke)
$\frac{7*4}{5*4}$       (Darren)
$\frac{25}{20}$          (Luke)
$\frac{28}{20}$          (Darren)

$\frac{28}{20} > \frac{25}{20}$
        Darren           >            Luke
  
By:
$\frac{28}{20}$ - $\frac{25}{20}$ = $\frac{3}{20}$
Which is also by 0.15 m
Darren jumps higher and by 0.15 m