40 benches are required to seat 160 students. How many benches will be required to seat 240 students at the same rate?
60
70
85
90
In a class of 65 students, the ratio of girls and boys is 3:2; then the number of girls are
26
39
21
44
Express 8 a2b2:10 a2b in simplest form
4 a2b2:5 b
4 b:5
4 b2:5 a
None of these
The side of square is 5 units. If its side is doubled the ratio of areas of the original square and thus formed is
1:4
4:1
2:1
1:2
If 3, 8,x and 16 are in proportion the value of x is
12
4
8
6
A certain amount has been divided into two parts in the ratio 4:7.If the first part is Rs.244,find the total amount.
716
671
176
661
A sum is divided into two parts in the ratio 11:4. If the smaller part is 840 then the bigger part is
2310
3150
2450
5280
When a Robin bird flies, it flaps wings 23 times in 10 sec. How many times will if flap its wings in 2 minutes?
50 times
126 times
256 times
276 times
40% of a number is 800. Find the number.
1000
2000
2500
3000
A man purchased an article for 80 and sells it for 100. Find his gain percent.
10%
25%
30%
50%