If 100 cats kill 100 mice in 100 days, then 4 cats would kill 4 mice in how many days ?
4 day
10 day
40 day
100 day
Answer: Option D
Similar Questions :
1. A father is now three times as old as his son. Five years back, he was four times as old as his son. The age of the son is :
12
15
18
20
Answer: Option B
Explanation:
Let son's age be x then father's age is 3x
Five years ago, father's age = 3x-5 and son's age x-5
So, 3x-5 = 4(x-5)
=> 3x-5 = 4x-20
=> x = 15
2. If 100 cats kill 100 mice in 100 days, then 4 cats would kill 4 mice in how many days ?
4 day
10 day
40 day
100 day
Answer: Option D
3. I have a few sweets to be distributed. If I keep 2, 3 or 4 in a pack, I am left with one sweet. If I keep 5 in a pack, I am left with none. What is the minimum number of sweets I have to pack and distribute ?
25
37
54
65
Answer: Option A
Explanation:
The required number will be such that it leaves a reminder of 1 when divided by 2, 3 or 4 and no reminder when divided by 5. Such a number is 25 among options
4. In a caravan, in addition to 50 hens, there are 45 goats and 8 camels with some keepers. If the total number of feet be 224 more than the number of heads in the caravan, the number of keepers is
5
8
10
15
Answer: Option D
Explanation:
Let the number of keepers be x.
Then, total number of feet = 2*50+4*45+4*8+2x
= 2x + 312
Total number of heads = 50+45+8+x = 103 + x
Now, (2x+312) = (103+x)+224
=> x = 15
5. The number of boys in a class is three times the number of girls. Which one of the following numbers cannot represent the total number of children in the class ?
48
44
42
40
Answer: Option C
Explanation:
Let number of girls = x and number of boys = 3x.
Then, 3x + x = 4x = total number of students.
Thus, to find exact value of x, the total number of students must be divisible by 4.