Question

Evan, Claire, Jaya and Tim are running a 3km relay race.

Evan ran 9/10 of a km
Claire ran 7/9 of a km
Jaya ran 2/3 of a km

What fraction of a km does Tim need to run to finish the race?

Try to answer ASAP please, thank you.

Answer 1

Tim needs to finish 59/90

Explanation:

Add together what Evan Claire and Jaya ran

9/10 + 7/9+ 2/3

The common denominator is 90

9/10 (9/9) +7/9 *10/10 + 2/3 *30/30

81/90 + 70/90 + 60/90

211/90

We need 3 km = 3 *90/90 = 270 /90

270/90 - 211/90 = 59/90