Nina ran 12 4/5 laps in 1/4 of an hour . At this rate , how many laps could she run in a hour ?

Question

asked Oct 17, 2019 137k views

2 Answers

Pete Ravenscroft · Answer 1 · 2019-10-24T05:16:15+0000

$\text{ Answer: There are }51 (1)/(5)\ laps.$

Step-by-step explanation:

Since we have given that

Number of laps Nina ran is given by

12(4)/(5)

Time taken by Nina to ran the lap is given by

(1)/(4)

Now, we use the unitary method ,

$In\ (1)/(4)\ hour,\text{ Nina ran }12(4)/(5)=(64)/(5)\ laps\\\\In\ 1\ hour,\text{ Nina ran }((64)/(5))/((1)/(4))=(256)/(5)\ laps$

Now, we change it into mixed fraction,

$(256)/(5)=51(1)/(5)\ laps$

Hence,

$\text{ there are }51 (1)/(5)\ laps.$