Sbi Po Preliminary Exam Exam Template With Answers Page 16
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24SBI PO Preliminary Exam Model Paper - 3
⎯ 100x + 2475 = 0
(x ⎯ 55) (x ⎯ 45) = 0
2
x
Required difference = (55 ⎯ 45) = 10
x = 55 or x = 45
Therefore, the numbers are 45 and 55.
5. Minimum number of chocolates are possible when he purchases maximum number of
costliest chocolates.
Thus, 2 × 5 + 5 × 2 = Rs.20
Now, Rs.100 must be spend on 10 chocolates as 100 = 10 × 10
Thus, minimum number of chocolates = 5 + 2 + 10 = 17
6. A : B : C
= 10 × 7 : 12 × 5 : 9 × 5
= 70 : 60 : 45
= 14 : 12 : 9
= Rs.175 ×
= Rs.45
7. 9 × 9 × 9 × 9 = 9
8. Let number of balls = (6 + 8) = 14
Number of white balls = 8
P (drawing a white ball) =
=
7x ⎯ 6x
9. Let P’s age and Q’s age be 6x years and 7x years respectively.
Then
x = 4
Required ratio
= (6x + 4) : (7x + 4)
= 28 : 32
= 7 : 8
.
10. Gain %
= [
× 100]%
= 1%
11.
+
+
= 114
=
= 38
a + 11d = 38
…. (i)
and
+
+
= 204
= 68
a + 21d = 68
…. (ii)
from equations (i) and (ii)
10d = 30
d = 3
So, a = 5
+
+
= 5 + 8 + 11 = 24
12. √ 0.09
= 9/100
Page 16
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