Ashwini has a certain number of Pencils she wishes to distribute in the class. when she tries to distribute 7 pencils to each student, 3 pencils are left out. if the class had 3 less students, each student would have got 2 pencils more, and no pencils would have been left out. How many pencils does Ashwini have? a) 90 b) 120 c) 140 d) 160 e) None of these

Ashwini has a certain number of Pencils she wishes to distribute in the class. when she tries to distribute 7 pencils to each student, 3 pencils are left out. if the class had 3 less students, each student would have got 2 pencils more, and no pencils would have been left out. How many pencils does Ashwini have?
a) 90
b) 120
c) 140
d) 160
e) None of these
by

1 Answer

Answer :

Let number of students be X.
so, total Pencils = 7X + 3
7X + 3 = (7+2) (X-3)
or., 7X + 3 = 9X – 27
or X = 15
total Pencils = 7X + 3 = 108
Answer: e)
by

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Last Answer : Answer - B (420) Explanation - Suppose the average expenditure was Rs a. Then total expenditure = 35a When 7 more students join the mess, total expenditure = 35a + 42 Now, the average expenditure= (35a+42) / (35 + 7) ... 42 =(a - 1) or, 35a + 42 = 42a - 42 7a = 84 a = 12

A sum was invested for 4 yr at a certain rate of simple interest. If it had been invested at 2% more annual rate of interest, then Rs. 64 more would have been obtained. What is the sum? (a) Rs.600 (b) Rs.700 (c) Rs.800 (d) Rs.900

Description : A sum was invested for 4 yr at a certain rate of simple interest. If it had been invested at 2% more annual rate of interest, then Rs. 64 more would have been obtained. What is the sum? (a) Rs.600 (b) Rs.700 (c) Rs.800 (d) Rs.900

Last Answer : (c) Rs.800