Let original length = x and original breadth = y. Decrease in area = xy - (80*90xy) /(100*100)
= xy - 18xy/25 = 7 xy/25
Decrease % = 7 xy/25 * 1 * 100 % = 28%
Q. No. :
2
Question :
What is the smallest number by which 2880 must be divided in order to make it into a
perfect square ?
A :
3
B :
4
C :
5
D :
6
Answer: C
Q. No. :
3
Question :
A man ate 100 bananas in five days, each day eating 6 more than the previous day. How many bananas did he eat on the first day?
A :
6
B :
9
C :
8
D :
7
Answer: C
Q. No. :
4
Question :
Three pipes, A, B, & C are attached to a tank. A & B can fill it in 20 & 30 minutes respectively while C can empty it in 15 minutes. If A, B & C are kept open successively for 1 minute each, how soon will the tank be filled?
A :
167 minutes
B :
165 minutes
C :
162 minutes
D :
164 minutes
Answer: A
Q. No. :
5
Question :
A monkey starts climbing up a tree 20ft. tall. Each hour, it hops 3ft. and slips back 2ft. How much time would it take the monkey to reach the top?
A :
15
B :
20
C :
21
D :
18
Answer: D
Q. No. :
6
Question :
main()
{
static int x[]={1,2,3,4,5,6,7,8};
int i;
for(i=2;i<6;++i)
x[x[i]]=x[i];
for(i=0;i<8;++i)
printf("%d",x[i]);
}
A :
1 2 3 3 4 4 7 8
B :
1 2 3 4 5 6 7 8
C :
8 7 6 5 4 3 2 1
D :
1 2 3 5 4 6 7 8
Answer: A
Q. No. :
7
Question :
A possible output of the following program fragment