In a 100m race, Jami beats Rony by 4 sec. If Jami allowed Rony to start 16m ahead of him, then Jami and Rony reach the finishing point at the same time. How long does Jami take to run the 100m race?

Created: 6 years ago | Updated: 2 years ago

Updated: 2 years ago

24 sec.

21 sec.

20 sec.

20.5 sec.

None of these

Mercantile Bank Ltd Mercantile Bank Ltd - Probationary Officer - 11.03.2011 গণিত সম্ভাব্যতা (Probability)

ব্যাখ্যা

1.1k

Best Ans:

100/Vr - 100/Vj = 4 - - - - (1)

100/Vj = 84/Vr = 21 - - - - (2)

solve these 2 equations , Vr = 4

Tj = 100/Vj - - - - > solve from 1st equation , Tj = 21

6 years ago

0 0

Md Azizur Rahman

Founder of Satt

সম্ভাব্যতা (Probability)