A number X is 150 more than a second number, Y. If the sum of X and Y is 5 times Y, what is the value of Y ?
50
40
80
60
70
Answer : Option B.
X = 150 + Y
X + Y = 5Y
150 + 2Y = 5Y
150 = 3Y => Y = 50
A square field has an area of 50625 m2. Find the cost of fencing around it at Rs. 15 per metre, (in Rs.)
12,500
6750
17,500
13500
16250
Answer : Option D .
Area of square field = 50625 => side of the field = = 225
cost of fencing @ Rs. 15/ meter = 4 × 225 × 15 = Rs. 13500
The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What will be the weight of the new person ?
76
76.5
85
80
90
Answer : Option C.
Increased wt. of 8 persons = 8 × 2.5 = 20 kg
=>wt. of new person = 65 + 20 = 85 kg
50% of a number is 18 less than two-third of that number. Find the number ?
123
115
119
108
101
Answer : Option D.
Let the no. be x
Given : 50x/100 = 2x/3 – 18
½ x – 2/3 x = - 18
=> x = 108
Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?
= 225
cost of fencing @ Rs. 15/ meter = 4 × 225 × 15 = Rs. 13500
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