Simple equations level 2
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Transcript of Simple equations level 2
SIMPLE EQUATIONS LEVEL 2
C.S.VEERARAGAVAN
15/04/2023VEERARAGAVAN C S [email protected] 9894834264
2
Numbers
Twice a number is 12 more than half the number.
What is the number?
1) 7 2) 6 3) 8 4) 9
2x = 12 +
4x = 24 + x
3x = 24
X = 8
I
15/04/2023VEERARAGAVAN C S [email protected] 9894834264
3
AgesThree years ago, Anurag’s age was thrice that of Bhragav. Two years hence Anurag’s age will be twice that of Bharagav. What is the present age of Anurag?1) 16 2) 18 3) 20 4) 22x – 3 = 3(y – 3) (1)(x + 2 ) = 2(y + 2) (2)x – 3y = – 6x – 2y = 2Hence – y = – 8 y = 8.X = 18.
II
15/04/2023VEERARAGAVAN C S [email protected] 9894834264
4
AgesGoutam is four times as old as Girija. Four years hence, the age of Goutam will be thrice that of Girija. What is the present age of Goutam?1) 20 2) 24 3) 28 4) 32x = 4y (1)x + 4 = 3 ( y + 4) (2)Using (1) in (2)4y + 4 = 3y + 12Y = 8Hence x = 32
III
15/04/2023VEERARAGAVAN C S [email protected] 9894834264
5
ALGEBRA2 Pencils and 3 pens cost Rs.82 Pens and 3 pencils cost Rs.7What is the cost of 5 pencils and 5 pens?1) 15 2) 12.50 3) 17.50 4) 202x + 3y = 83x + 2y = 7Hence 5x + 5y = 15.
IV
15/04/2023VEERARAGAVAN C S [email protected] 9894834264
6
AGESRajani’s age is 9 years more than half of her age.What is Rajani’s age?1) 18 2) 20 3) 22 4) 24x = 9 + 2x = 18 + xx = 18.
V