If Levi eats 1/5 of pie, Travis eats 1/4 of the same pie, and Delaney eats 2/7 of the same pie, what fraction of the pie did they eat altogether

ANSWER

Since the word altogether which is the key word means the sum so we will add all the fractions i.e

= 1/5 + 1/4 + 2/7

LCM of 5,4 and 7 = 140

= ⅕×140 + ¼×140 + ²/⁷×140

140

= 28 + 35 + 40

140

= 103

140

Therefore the total fraction is 103

140

a is the right answer