Question
A man has Rs. 15,000 with him. He gives away 12% of this
for charity, 15% of the remaining amount for education, and 20% of the new remaining amount for healthcare. What amount is left with him in the end?Solution
ATQ,
Money donated for charity = 0.12 × 15000 = Rs. 1,800
Amount left after charity = 15000 – 1800 = Rs. 13,200
Money donated for education = 0.15 × 13200 = Rs. 1,980
Amount left after education = 13200 – 1980 = Rs. 11,220
Money donated for healthcare = 0.20 × 11220 = Rs. 2,244
Amount left after healthcare = 11220 – 2244 = Rs. 8,976
- Length of a chord in a circle of radius 'r' cm, is 18 cm and distance between chord and centre of the circle is 40 cm. Find the value of (3r + 7).
In a rectangle ABCD, ‘P’ is a point inside the rectangle. If PA = 8 cm, PC = 6 cm and PB = 5 cm, then find PD.
If G is the centroid and AD, BE, CF are three medians of ∆ABC with area 72 cm 2 , then the area of ∆BDG is?
What is the ∠ SRO if O is the centre of circle, ∠ SPO = 55˚ and ∠ POR = 115 ˚
In a circle, the chord AB is 12 cm, and the perpendicular from the center O to the chord AB bisects it at point P. If OP = 5 cm, what is the radius of t...
If I is the incentre of ΔABC , if ∠ BIC = 112.5° , then what is the measure of ∠ BAC?
The angles of a triangle are in parallel series, the ratio of the degrees of the minimum angle and the radians of the maximum angle is 60 :π , then how...
What is the angle traced by the hour hand in 18 minutes?
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...