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# A certain school has a student-to-teacher ratio of 25 to 2. The averag

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Math Expert
Joined: 02 Sep 2009
Posts: 56272
A certain school has a student-to-teacher ratio of 25 to 2. The averag  [#permalink]

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25 Sep 2018, 04:47
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Difficulty:

15% (low)

Question Stats:

94% (02:12) correct 6% (00:00) wrong based on 21 sessions

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A certain school has a student-to-teacher ratio of 25 to 2. The average (arithmetic mean) annual salary for teachers is \$42,000. If the school pays a total of \$3,780,000 in annual salaries to its teachers, how many students does the school have?

(A) 900
(B) 1000
(C) 1125
(D) 1230
(E) 1500

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Concentration: Accounting, Finance
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A certain school has a student-to-teacher ratio of 25 to 2. The averag  [#permalink]

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25 Sep 2018, 05:07
Bunuel wrote:
A certain school has a student-to-teacher ratio of 25 to 2. The average (arithmetic mean) annual salary for teachers is \$42,000. If the school pays a total of \$3,780,000 in annual salaries to its teachers, how many students does the school have?

(A) 900
(B) 1000
(C) 1125
(D) 1230
(E) 1500

Let the common unit be x as it's a ratio case.

According to the question:

2x*42000 = 3780000

x = 45.

No of Students = 45 * 25 = 1125

No of teacher = 2 * 45 = 90.

A certain school has a student-to-teacher ratio of 25 to 2. The averag   [#permalink] 25 Sep 2018, 05:07
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