Question

3. Set up the equation and solve:
i) Anil thinks of a number. If he takes away 5 from of the number, the result is 44.
Find the number.
ii) Laxmi’s father is 50 years old. He is 5 years older than three times Laxmi’s age.
What is Laxmi’s age

Answer 1

Answer:

Let, Laxmi's age be x years

∴ Laxmi's father's age =4+3x

A.T.Q,

49=4+3x

⟹3x=49−4

⟹x= 45/3

=15

∴ Laxmi is 15 years old

Answer 2

Answer:

1)49 2)5

Step-by-step explanation:

1) Let the number be x.

Equation formed: x-5=44

Solving the equation:-

⇒x-5=44

⇒x=44+5

⇒x=49

Thus Anil thinks of number 49.

2) Let Laxmi's age be x

Laxmi's father's age=20=3x+5

Solving the equation:-

⇒3x+5=20

⇒3x=20-5

⇒3x=15

⇒x=15/3

⇒x=5

This Laxmi's age is 5.

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