Question

Renu took part in a 100m race. She tripped and fell after running 80 m 50 cm. How much distance did she have left to run?

Answer 1

m	cm
99	100
100 - 80	00 - 50
19	50

Borrow l m = 100 cm 

So, 100 m = 99 m + 100 cm 

Total distance to run 

Distance covered 

Distance left to run

∴ 19 m 50 cm distance left to run.

Answer 2

Total distance - 100m

Distance covered by Renu - 80m 50cm

Distance left -

  100 m 00 cm

— 80 m 50 cm

=  10 m 50 cm is the distance Renu has left to run.