# Quant Test for IBPS PO 2018 Prelim Exam Set – 9

Directions(1-5): Find out the relationship between x and y and choose a correct option.

1. I. √x + 6 = √121 – √36
II. y^2 + 112 = 473

y>x
x=y or relation cannot be established.
x >= y
y>=x
x>y
Option C
x = 19
y= + 19, – 19
x >= y

2. I. x^ 4 – 1000 = 296
II. y^2 + 330 = 346

x=y or relation cannot be established.
x>y
y>=x
x >= y
y>x
Option A
x = + 6, -6
y = + 6, -6
No relation.

3. I. x^ 2 + 3x – 40 = 0
II. y ^2 – 14y + 48 = 0

x >= y
x=y or relation cannot be established.
y>x
x>y
y>=x
Option C
x ^2 + 8x – 5x – 40 = 0
x (x + 8) – 5 (x + 8) = 0
x = 5, x = – 8
y^2 – 8y – 6y + 48 = 0
y (y – 8) – 6 (y – 8) = 0
y = 6, 8
y>x

4. I. x^ 2 + x – 2 = 0
II. y^ 2 + 5y + 6 = 0

y>=x
y>x
x>y
x=y or relation cannot be established.
x >= y
Option E
X^ 2 + 2x – x – 2 = 0
x (x + 2) – 1 (x + 2) = 0
x = 1, – 2
y ^2 + 5y + 6 = 0
y ^2 + 3y + 2y + 6 = 0
y (y + 3) + 2 (y + 3) = 0
y = – 2, – 3
x>=y

5. I. 2x^2 + 13x + 21 = 0
II. 2y^2 + 27y + 88 = 0

y>x
y>=x
x>y
x=y or relation cannot be established.
x >= y
Option C
2x^2 + 13x + 21 = 0
2x^2 + 7 x + 6x + 21 = 0
x (2x + 7) + 3 (2x + 7) = 0
x = – 7/2, – 3
2y^2 + 16y + 11y + 88 = 0
2y (y + 8) + 11 (y + 8) = 0
y = – 8, – 11/2

6. Stokes gave a loan of Rs. 400 to Rashid and recovered it at the rate of Rs. Rs.100 each month for six months, commencing from the end of 1st month. What is the effective rate of simple interest per annum?
85%
95%
70%
100%
80%
Option D
Principal = Rs.400
Amount = Rs 100 x 6 = Rs 600
Interest = Rs 600 – Rs 400 = Rs 200
Time = 6 months = 6/12 years
Now, 200 = (400 × 1 × R)/( 2 × 100)
R = (440 × 100)/400 = 100%

7. In a competitive examination in state A, 6% candidates got selected from the total appeared candidates. State B had an equal number of candidates appeared and 7% candidates got selected with 80 more candidates got selected than A. What was the number of candidates appeared from each state?
9250
8520
9000
8000
7500
Option D
Equal number of candidates appeared in each state.
In state A, 6% candidates got selected.
In state B, 7% candidates got selected.
Given that 80 more candidates got selected in state B than A. 1% of candidates appeared in each state = 80
=> 100% of candidates appeared in each state = 80×100 = 8000
Number of candidates appeared from each state = 8000

8. An air conditioner can coo the hall in 40 minutes while another takes 45 minutes to cool under similar conditions. If both air conditioners are switched on at same instance then how long will it take to cool the room approximately ?
28 min.
25 min.
30 min.
20 min.
22 min.
Option E
Let the two conditioners be A and B.
‘A’ cools at 40min ‘B’ at 45min.
Together =(axb)/(a+b) = (45×40)/85 = 21.1764 = (approx) 22 min.

9. A dealer buys dry fruits at Rs. 100, Rs 80 and Rs. 60 per kilogram. He mixes them in the ratio 4 : 5 : 6 by weight, and sells at a profit of 50%. At what price per kilogram does he sell the dry fruit?
135
120
116
125
105
Option C
Let he bought 4x kg, 5x kg and 6x kg of dry fruits.
Total cost price for dealer = (4x×100) + (5x×80) + (6x×60) = 400x + 400x + 360x = 1160x
Total selling price for dealer = 1740x
Required price per kg = 1740x/15x = 116

10. A basket contains 8 Red and 6 Pink toys. There is another basket which contains 7 Red and 8 Pink toys. One toy is to drawn from either of the two baskets. What is the probability of drawing a Pink toys?
100/213
101/210
91/215
115/211
100/217
Option B
Probability of one basket = 1/2
1st Basket Pink toy probability =1/2* (6c1/14c1)
2nd Basket Pink toy probability = 1/2* (8c1/15c1)
Adding both (1/2*6/14) + (1/2*4/15) = 3/14+4/15 = 101/210