CAT 1998 Question Paper

Let's say number of rubbies are x and emeralds are y.
So 0.3x + 0.4y = 12
And total wealth = 4x+5y
Now putting value of x from eq.1 to eq.2 
i.e. total wealth = 4(12-0.4y)/0.3 + 5y
Now for maximizing total wealth y should be equal to zero.
Hence x = 40

Let's say number of coins are 2.5x , 3x and 4x
So total amount will be = 2.5x + 3x(0.5) + 4x(0.25) = 210
So x = 42
And number of 1 rs. coins = 2.5x = 105

When numbers of chocolates, biscuits and apples are integers.
Now let's say number of chocolates taken 1 , then biscuits will be 2 and apples can be 4,5,6,7
Hence minimum money that should be spent = 1+1+8 = 10 (Hence option C is cancelled)
Now when number of chocolates are 4
Biscuits will be 8
And apples can be 13,14,15....
Now total money spent can be 4+4+26 = 34 and more of it.
Hence answer will be A

Let the total production cost be 100.
Hence, selling price is 120.
Price of German component A is 30 and the price of the US component B is 50

After change in exchange rate, price of German component is 30*1.3 = 39
and price of US component is 50*1.22=61

Total increase equals 39+61-30-50 = 20
Hence, the minimum production cost is 100+20=120
The maximum possible selling price is 120*110% = 132.

So, maximum possible gain is (132-120)/120 = 10%

Let the total production cost be 100.
Hence, selling price is 120.
Price of German component A is 30 and the price of the US component B is 50

After change in exchange rate, price of German component is 30*1.2 = 36
and price of US component is 50*0.88=44

Total increase equals (36+44)-(30+50) = 0
Hence, the total production cost did not change.
As the selling price also did not change, the gain percentage equals 20%

Since the people wearing yellow saree and the white saree were at the ends, Ms West Bengal was not sitting at one of the ends and was not a runner up, the arrangement is as shown below:

Since the people wearing yellow saree and the white saree were at the ends, Ms West Bengal was not sitting at one of the ends and was not a runner up, the arrangement is as shown below:

Since the people wearing yellow saree and the white saree were at the ends, Ms West Bengal was not sitting at one of the ends and was not a runner up, the arrangement is as shown below:

Since the people wearing yellow saree and the white saree were at the ends, Ms West Bengal was not sitting at one of the ends and was not a runner up, the arrangement is as shown below:

The total time taken for both the journeys is the same. So, a) is incorrect. If he goes with the same speed both ways, he would've been at the same point at noon on both days. So, d) is incorrect. If he does not travel with the same speed in both the directions, he need not be at the same spot at noon. So, option b) is incorrect. Option c) is the correct answer.