Question

SIMPLE EQUATIONS
91
retha
EXERCISE 4.4
1. Set up equations and solve them to find the unknown numbers in the following cases:
(a) Add 4 to eight times a number, you get 60
(b) One-fifth of a number minus 4 gives 3.
(c) If I take three-fourths of a number and add 3 to it, I get 21.
(d) When I subtracted 11 from twice a number, the result was 15.
(e) Munna subtracts thrice the number of notebooks he has from 50, he finds the
result to be 8.
(f) Ibenhal thinks of a number. If she adds 19 to it and divides the sum by 5, she
will get 8
5
(g) Anwar thinks of a number If he takes away 7 from of the number, the
result is 23
2. Solve the following:
(a) 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. What is the
lowest score?
(b) In an isosceles triangle, the base angles are equal The vertex angle is 40°
What are the base angles of the triangle? (Remember, the sum of three angles of
a triangle is 180°)
(c) Sachin scored twice as many runs as Rahul Together, their runs fell two short
of a double century. How many runs did each one score?
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3. Solve the following:
(1) 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?
(1) Laxmi's father is 49 years old. He is 4 years older than three times Laxmi's age.
What is Laxmi's age?
() People of Sundargram planted trees in the village garden. Some of the trees
were fruit trees. The number of non-fruit trees were two more than three times
the number of fruit trees. What was the number of fruit trees planted if the
number of non-fruit trees planted was 77?
4. Solve the following riddle:
I am a number,
Tell my identity!
Take me seven times over
And add a fifty!
To reach a triple century
You still need forty!
UP​

Answer 1

Step-by-step explanation:

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