Question
In a 600 ml solution, the ratio of milk to water is 3:2.
After adding ‘x’ ml each of milk and water, the ratio becomes 7:5. Determine the value of ‘x’.Solution
ATQ,
Milk = (3/5) × 600 = 360 ml
Water = 600 – 360 = 240 ml
ATQ:
(360 + x)/(240 + x) = 7/5
⇒ 5(360 + x) = 7(240 + x)
⇒ 1800 + 5x = 1680 + 7x
⇒ 2x = 120
⇒ x = 60
The area of an equilateral triangle is 16√3 sq m. Its perimeter is
The perimeter of a rectangular field is 240 meters, and its length is 20% more than its breadth. What is the area of the field?
In ∆ABC, AB = 5cm, BC = 6cm and AC = 10cm then find out the value of cos A?
A set of data is presented in the form of a frequency distribution table with class intervals and their respective frequencies. The lower boundary of th...
The length of the each side of an equilateral triangle is 28√3. The area of incircle, (cm 2 ) is
The length of a tangent from a point A at a distance 5 cms. from the centre of the circle is 4 cms. Radius of the circle is
Consider two concentric circles having radii 17 cm and 15 cm. What is the length (in cm) of the chord, of the bigger circle, which is a tangent to the s...
A and B are the centres of two circles with radii 11 cm and 6 cm respectively. A common tangent touches these circles at P & Q respectively. If AB =...
In ABC,D is a point on side AB such that BD = 2 cm and DA = 3 cm. (E is a point on BC such that DE) AC, and AC = 4 cm. Then (Area of A BDE) : (Area of ...
