Veto q&a 7 Month22 (1)

2018
May
Q
Q
b 2 = 16 + 9, b 2 = 25, b= 5
a+b =7, a+5 =7
a = 7 - 5 = 2
A man starts from a point and move 3 km North,
then turns to West and goes 2 km. He turns North
and walks 1 km and then move 5 km towards East.
How far is he from the starting point?
N
W
1km
S
5km
B
2km 3km
A
AC = AB + BC
2 2
=
2 2
4 + 3
= 16 + 9 == 25 = 5
The price of a material decreased by 10% and the
number of sold ones increased by 30%. What is
the effect in selling?
90 130
x
100 100
x 100 = 117
17% increasing
9
th
Q Midhun purchased a tape recorder at of its
10
selling price and sold for 8% more than its selling
price. What is the percentage of profit?
Let the selling price = x
9x
CP =
10
108
Selling Price = × 10
100
E
C
Q
Q
Q
Q
108x 90x 18x
Profit = − =
100 100 100
18x
Profit = 100 x 100 = 20%
9x
10
Identify the missing number?
3 4 5
7 9 11
15 19 ?
3x2+1=7 7x2+1= 15
4x2+1=9 9x2+1= 19
5x2+1=11 11x2+1= 23
@hang out
When 32 is subtracted from a number it reduces
to 1/3 rd of the number. Which is the 1/3 rd of the
number?
Take the number as x
∴x-32 = x/3
x
⇒x- =32⇒
3x
− x
= 32
3 3
2x 32×
3
⇒ -32, ⇒ x= = 48
3
2
1
∴1/3 rd of the number = x48 = 16
3
In an examination, 60% students were successful.
If the number of successful students was 240, find
the number of unsuccessful students?
Total students 60% x = 240
60
(x)= 240
100
x = 400
∴Successful students = 240
∴Unsuccessful students = 400-240=160
1 3 5 11
13 − 12 11 + 10 = ?
3 4 6 12
1 11 3 5
(13+10-12-11)+ + − − 3 12 4 6
1 11 3 5 −4 −1
0 + + − − = =
3 12 4 6 12 3
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