Answer:
23/60
Step-by-step explanation:
All fractions of tiles, when summed up, need to be 1
Indian red is 1/4 of the tiles
Tuscan blue is 1/6 of the tiles
Fucalyptus is 1/5 of the tiles
Sand is X of the tiles (X is the fraction we want to know)
So, we can formulate the equation:
1/4 + 1/6 + 1/5 + X = 1
applying LCM, we have:
(15 + 10 + 12 + 60X) = 60
60X = 23
X = 23/60