Sun	Mon	Tue	Wed	Thu	Fri	Sat
23	24	25	26	27	28	1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30	31	1	2	3	4	5

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Multiple Choice Questions

The average weight of 15 students in a class increases by 1 5 kg when one of the students weighing 4...........

Numerical Ability Average

The average weight of 15 students in a class increases by 1.5 kg when one of the students weighing 40 kg is replaced by a new student. What is the weight (in kg) of the new student?

64.5

62.5

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Explanation:

let the weight of 1 student = x kg
the weight to 15 student = 15 x kg
Let the weight of new comer = y kg.
∴ According to the question
15x - 40 + y = 15 (x + 1.5)
15x - 40 + y = 15x + 22.5
y = 62.5 kg

Hence, option 4 is the correct answer.

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