Question

Naina ran the 100metre dash(means run/stretch) in 12.6 second .her twin sister Diana run it in 14.6 second by what percent Naina time differ from her sister diana<br /><br /><br />please solve this problem Answer is 20.07

Answer 1

14.6-12.6=2
2/12.6*100
=20/126*100
=15.87
This is the actual answer.
The answer given in different books maybe sometimes incorrect......
Hope this is helpful