Finding Angles of a Cyclic Quadrilateral Video Explanation Question In a cyclic quadrilateral ABCD: \[ \angle A = (2x + 4)^\circ,\quad \angle B = (y + 3)^\circ,\quad \angle C = (2y + 10)^\circ,\quad \angle D = (4x – 5)^\circ \] Find all four angles. Solution Step 1: Concept Opposite angles of a cyclic quadrilateral are […]
Finding Angles of Triangle Video Explanation Question In a triangle ABC: \[ \angle A = x^\circ,\quad \angle B = (3x – 2)^\circ,\quad \angle C = y^\circ \] Also, \[ \angle C – \angle B = 9^\circ \] Find the three angles. Solution Step 1: Concept Sum of angles in a triangle = \(180^\circ\) — Step
In a △ABC, ∠A = x° ,∠B = (3x – 2)°, ∠C = y°.Also ∠C – ∠B = 9° .find the three angles . Read More »
Men and Boys Work Problem Video Explanation Question 2 men and 7 boys can do a piece of work in 4 days. 4 men and 4 boys can do the same work in 3 days. In how many days will one man and one boy do the work? Solution Step 1: Let Variables Let work
Finding Angles of a Cyclic Quadrilateral Video Explanation Question ABCD is a cyclic quadrilateral where: \[ \angle A = (4y + 20)^\circ,\quad \angle B = (3y – 5)^\circ,\quad \angle C = (4x)^\circ,\quad \angle D = (7x + 5)^\circ \] Find all four angles. Solution Step 1: Concept In a cyclic quadrilateral, opposite angles are supplementary:
Finding Money of A and B Video Explanation Question A and B each have some money. If A gives ₹30 to B, then B will have twice the money left with A. If B gives ₹10 to A, then A will have thrice as much as B. Find how much money each has. Solution Step
Finding Incomes of X and Y Video Explanation Question The incomes of X and Y are in the ratio 8 : 7. Their expenditures are in the ratio 19 : 16. Each saves Rs 1250. Find their incomes. Solution Step 1: Let Variables Let incomes of X and Y be \(8x\) and \(7x\) respectively Let
Finding Dimensions of a Rectangle Video Explanation Question In a rectangle, if length is increased by 3 m and breadth is decreased by 4 m, the area is reduced by 67 sq m. If length is decreased by 1 m and breadth is increased by 4 m, the area is increased by 89 sq m.
Finding Dimensions of a Rectangle Video Explanation Question The area of a rectangle remains the same if the length is increased by 7 m and the breadth is decreased by 3 m. If the length is decreased by 7 m and the breadth is increased by 4 m, the area is decreased by 21 sq
Finding Area of a Rectangle Video Explanation Question In a rectangle, if length is increased by 2 units and breadth is decreased by 2 units, the area decreases by 28 sq units. If length is decreased by 1 unit and breadth is increased by 2 units, the area increases by 33 sq units. Find the
Finding Speeds of A and B Video Explanation Question A takes 3 hours more than B to walk 30 km. If A doubles his speed, he reaches 1.5 hours earlier than B. Find their speeds. Solution Step 1: Concept Time = Distance / Speed Step 2: Let Variables Let speed of A = \(x\) km/h