Question

Jaidev takes 2 and 1/5 minutes to walk across the school ground.Rahul takes 7/4 minutes to do the same.Who takes less time and by what fraction​

Answer 1

Answer:

Rahul takes less time

Step-by-step explanation:

rakesh:2*1/5 or 11/5min

Rahul:7/4min

difference=4/5

Answer 2

$\pink \bigstar$Question:-$\pink \bigstar$

Jaidev takes 2 and 1/5 minutes to walk across the school ground.Rahul takes 7/4 minutes to do the same.Who takes less time and by what fraction.

Given:-

$\sf{Jaidev \: takes \: 2 \frac{1}{5} \: minutes \: and \: Rahul \: takes \: \frac{7}{4} \: minutes \: to \: walk \: the \: ground.}$

Asked:-

Who takes less time and by What fraction ?

Operation:-

Substraction (-)

To Find who takes less time and by what fraction,we compare and subsract $\sf{2 \frac{1}{5} }$ and $\sf{ \frac{7}{4} }$

$\sf{2 \frac{1}{5} } - \frac{7}{4}$

$\sf{Jaidev \: takes \: 2 \frac{1}{5} \: minutes \: to \: walk.}$

$\sf{Rahul \: takes \: \frac{7}{4} \: minutes \: to \: walk.}$

$\sf{To \: find \: who \: takes \: less \: time \: and \: by \: what \: fraction \: we \: compare \: and \: subtract \: 2 \frac{1}{5} \: and \: \frac{7}{4}}$

Solve Problem:-

• Convert mixed fraction to improper fraction:-

$\sf{2 \frac{1}{5} = \frac{11}{5} }$

• LCM of the denominators (5 and 4) is 20.
• Convert the fraction to like fractions.

$\sf{By \: finding \: equivalent \: fraction : \frac{11}{5} = \frac{11 \times 4}{5 \times 4} = \frac{44}{20} : \frac{7}{4} = \frac{7 \times 5}{4 \times 5} = \frac{35}{20} }$

• Compare the fraction :$\sf{ \frac{44}{20} > \frac{35}{20} }$
• Subract the smaller fraction from the bigger fraction.

$\sf{ \frac{44}{20} - \frac{35}{20} = \frac{44 - 35}{20} = \frac{9}{20} }$

Therefore,Jaidev takes 9/2 more minutes to walk across the Ground.