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there are 150 9th graders and 300 10th graders

Answer: No. of students in 9th grade = 150

No. of students in 10th grade = 300

Step-by-step explanation: Total No. of Students = 450

∴No. of students in 9th grade = 1/3 of 450

I.e. = 1/3 × 450 = 150 students in 9th grade.

Let the No. of students in 10th grade be 'x'

x = 450 - 150 = 300 students in 10th grade.

∴No. of Students in 9th grade = 150 students

∴No. of Students in 10th grade = 300 students

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