For finding the perpendicular distance between two lines ax + by = C1, ax + by = C2 Coefficients must be equal then Perpendicular Distance = |C1-C2|/√(a2+ b2) 6x + 8y = 18 …………(i) 12x + 16y =20…………..(ii) Multiplying equation (i) with 2 12x + 16y =36 Now the Perpendicular Distance = |36-20|/√(12² + 16²) = 16/20 = 0.8
A trader bought an article for Rs. 1200 and marked it 25% above of its cost price. If he sold it after giving a discount of Rs. 60 then find the profit ...
The total age of A, B and C five years hence will be 84 years. Find the age of C three years hence, if the present age of A and B is 34 years and 23 yea...
Amit age after 20 years will be 4 times his age 4 years back. What is the present age of Amit?
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If the total ages of A and B is 6 years more than the total age of B and C. C is how many years younger than A?
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2n years ago, the age of Rahul was four times that of his son and n years ago, the age of Rahul was thrice that of his son. If n years later, the sum of...
Three years ago, the ratio between the ages of 'A' and 'B' was 4:5, and eight years from now, the ratio will be 6:7. If 'C' is 12 years older than 'A', ...
The ratio of the present ages of father and his son is 9:5. The product of their ages 3 years ago was 33 times of his son’s age that year. What wa...
A group of 7 friends had an average age of 24 years. When two new friends join the group, the average age of the group increases to 26 years. If the age...
