please help I am in trouble
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12
Step-by-step explanation:
Let the original strength of the class be x
Sum of ages of the whole class = 40x years
Sum of ages of 12 new students
= (12 multiply 32) years
= 384 years
So, 40x + 384 ÷ x + 12 = 36
= 40x + 384= 36x + 432
= 4x = 48
= x = 48/4
= x = 12
Hence, the original strength of the class = 12
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