Advertisements
Advertisements
प्रश्न
The volume of water in a tank is twice of that in the other. If we draw out 25 litres from the first and add it to the other, the volumes of the water in each tank will be the same. Find the volume of water in each tank.
Advertisements
उत्तर
Let ‘x’ be the volume of water in the second tank.
The volume of water in the first tank be 2x.
According to the question
⇒ 2x – 25 = x + 25
⇒ 2x – x = 25 + 25
∴ x = 50
The volume of water in the second tank is 50 litres.
Volume of water in the first tank = 2x
= 2 × 50
= 100
Therefore, the volume of water in the first tank is 100 litres.
APPEARS IN
संबंधित प्रश्न
Complete the last column of the table.
| Equation | Value | Say, whether the Equation is Satisfied. (Yes/No) |
| x + 3 = 0 | x = 3 |
Write equation for the following statement:
Ten times a is 70.
Write the given equation in statement form:
p + 4 = 15
Simplify:
−4x2 + {(2x2 − 3) − (4 − 3x2)}
Solve the following equation and verify the answer:
6x + 5 = 2x + 17
Solve the following equation and verify the answer:
Five times the price of a pen is Rs 17 more than three times its price. Find the price of the pen.
Answer the following:
Take Sarita’s present age to be y years
- What will be her age 5 years from now?
- What was her age 3 years back?
- Sarita’s grandfather is 6 times her age. What is the age of her grandfather?
- Grandmother is 2 years younger than grandfather. What is grandmother’s age?
- Sarita’s father’s age is 5 years more than 3 times Sarita’s age. What is her father’s age?
Change the following statements using expressions into statements in ordinary language.
(For example, Given Salim scores r runs in a cricket match, Nalin scores (r + 15) runs. In ordinary language − Nalin scores 15 runs more than Salim.)
A notebook costs ₹ p. A book costs ₹ 3 p.
State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable.
x − 2 = 0
