Question

answer all 5

1) In an isosceles triangle the base angles are equal , the angle at vertex is 30.Find the base angle .

2)A number when multiplied by 9 , is 64 more than itself. Find the number.

3) In a cricket match Summit took 4 more than twice the number of wickets taken by Amit.Together they took 16 wickets . How many wickets taken by each.

4)The perimeter of a rectagular plot is 200 m.It's length is 4 times than its breadth of the rectangular plot.Find length and breadth of the plot.

5) Jiten is 30 years old. Siten is 6 years old. After how many years will Jiten be thrice the age of Siten.

Answer 1

2)
let the no be x
9x=x+64
9x-x=64
8x=64
x=64/8=8
x=8

1)
let the base angles be x
x+x+30=180(A.S.P)
2X=150
X=75

4)
let the breadth be x
then length will be 4x
4x+x=200
5x=200
x=200/5
x=40

3)
total wickets=16
according to question
4+2x=16-x
12=3x
x=4
sumit. 12 wickets
Amit. 4 wickets