Ram is training for his school-s annual sports meet- He earlier used to run at 8 m - s- now after training- he has increased his speed by 1-2 times his original speed- Find how much time will Ram take to complete a 100m race- -4 MARKS-

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Standard VII

Mathematics

Application Problems in Speed, Distance, Time

Ram is traini...

Question

Ram is training for his school's annual sports meet. He earlier used to run at 8 m/s, now after training, he has increased his speed by $\frac{1}{2}$ times his original speed. Find how much time will Ram take to complete a 100m race. [4 MARKS]

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Solution

Process : 1 Mark
Calculations : 2 Marks
Result : 1 Mark

Original speed of Ram = 8 m/s
After training, his speed has increased to = $8 + \frac{1}{2} \times 8 = 12 m / s$
Time taken to complete the 100m race $= \frac{100}{12} = \frac{25}{3}$ seconds.

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Ram is training for his school's annual sports meet. He earlier used to run at 8 m/s, now after training, he has increased his speed by 12 times his original speed. Find how much time will Ram take to complete a 100m race. [4 MARKS]

Process : 1 Mark Calculations : 2 Marks Result : 1 Mark Original speed of Ram = 8 m/s After training, his speed has increased to = 8+12×8=12m/s Time taken to complete the 100m race =10012=253 seconds.

Ram is training for his school's annual sports meet. He earlier used to run at 8 m/s, now after training, he has increased his speed by $\frac{1}{2}$ times his original speed. Find how much time will Ram take to complete a 100m race. [4 MARKS]

Process : 1 Mark
Calculations : 2 Marks
Result : 1 Mark

Original speed of Ram = 8 m/s
After training, his speed has increased to = $8 + \frac{1}{2} \times 8 = 12 m / s$
Time taken to complete the 100m race $= \frac{100}{12} = \frac{25}{3}$ seconds.