Home
Class 7
MATHS
Solve the following:(i) Irfan says that ...

Solve the following:(i) Irfan says that he has 7 marbles more than five times the marbles Parmit has. Irfan has 37 marbles. How many marbles does Parmit have?(ii) Laxmi's father is 49 years old. He is 4 years older than three times Laxmi's age. What is Laxmi's age?

Text Solution

Verified by Experts

1) parmit has x marbel
5x+7=37
5x=30
x=6
2)3x+4=49
3x=45
x=15
3)Mean=19
...
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Laxmi's father is 49 years old.He is 4 years older than 3xx Laxmi's age.

Set up an equation in the following cases: (i) Irfan says that he has 7 marbles more than five times the marbles Parmit has. Irfan has 37 marbles. (Take m to be the number of Parmit’s marbles.) (ii) Laxmi’s father is 49 years old. He is 4 years older than three times Laxmi’s age. (Take Laxmi’s age to be y years.) (iii) The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest score is 87. (Take the lowest score to be l.) (iv) In an isosceles triangle, the vertex angle is twice either base angle. (Let the base angle be b in degrees. Remember that the sum of angles of a triangle is 180 degrees).

Knowledge Check

  • Ramya has 52 marbles. If Janani had 9 more than what she now has, she would have half as many as Ramya. How many marbles are there with Janani now?

    A
    17
    B
    15
    C
    26
    D
    35

  • My father is 21 years older than me. In 12 years time, his age will be twice mine. How old am I now?

    A
    (a) 9 years
    B
    (b) 8 years
    C
    (c) 10 years
    D
    (d) 11 years

  • Hari is twice as old as Johnny, who is three years older than Rahul. If Hari's age is five times Rahul's age, how old is Johnny ?

    A
    2 years
    B
    4 years
    C
    5 years
    D
    8 years

    • Similar Questions

    Explore conceptually related problems

    Age of Ramanjeet's father is 49 years. If his father's age is 4 years more than three times of his age, then find his age

    Answer the following: (a) Take Sarita’s present age to be y years (i) What will be her age 5 years from now? (ii) What was her age 3 years back? (iii) Sarita’s grandfather is 6 times her age. What is the age of her grandfather? (iv) Grandmother is 2 years younger than grandfather. What is grandmother's age? (v) Sarita’s father’s age is 5 years more than 3 times Sarita’s age. What is her father's age?

    A father is 30 years older than his son.One year ago he was 4 xx as old as his son.Find their present ages.

    Consider the following situation: Rajus fathers age is 5 years more than three xx Rajus age.Rajus father is 44 years old.Set up an equation to find Rajus age.

    In a family, a couple has a son and daughter. The age of the father is three times that of his daughter and the age of the son is half of his mother. The wife is nine years younger to her husband and the brother is seven years older than his sister. What is the age of the mother?

    Home
    Profile