there are a total of 500 students in grades 1 through 5 in an elementary school. 17% of the total number of students are in 1st
grade. 19% of the total number of students are in 4th grade. The number of 3rd-grade students is 9 less than the number of 4th-grade students. The number of 2nd-grade students is 10 less than the number of 5th-grade students. complete the table to show the number of students in each grade. enter your answers in the table.
17% of the total number of students are in 1st grade →0.17×500=85 students in 1st grade 19% of the total number of students are in 4th grade →0.19×500=95 students in 4th grade <span>The number of 3rd-grade students is 9 less than the number of 4th-grade students. →95-9=86 students in 3rd grade </span><span>The number of 2nd-grade students is 10 less than the number of 5th-grade students. 1st grade+4th grade+3rd grade=85+95+86=266 500-266=234=total number of students in 2nd grade and 5th grade Let x=2nd grade students Let y=5th grade students x+y=234 2nd grade students is 10 less than the number of 5th grade students →x=y-10 Since x=y-10 so we substitute y-10 for x →y-10+y=234 →2y-10=234 +10 +10 →2y=244 →2y/2=244/2 →y=122 students in 5th grade x+y=234 →x+122=234 →x=112 students in 2nd grade ANSWERS: 1st: 85 2nd: 112 3rd: 86 4th: 95 5th: 122
Because we know how large each hand is, we can multiply the number of hands by the amount of inches each one represents to find the total number of inches.
