Question

There are 420 students in kindergarten through third grade if 1/4 of the students are in first grade 20% are in the second grade and 115 students are in the third grade how many students are in kindergarten explain

Answer 1

Let x be kindergarten students

x = 420 - [(0.25*420) + (0.2*420)+115]

x= 420 - (105 + 84 + 115)

x= 420 - 304

x= 116 kindergarten students

Answer 2

The answer would be around 120