Question
90 litres of mixture contains water and milk in the
ratio 1:5 respectively. If 24 litres of the mixture is replaced by same quantity of water, then find the ratio of water and milk in the final mixture.Solution
Remaining quantity of the original mixture = 90 – 24 = 66 litres Quantity of water in the final mixture = 66 x (1/6) + 24 = 35 litres Quantity of milk in the final mixture = 66 x (5/6) = 55 litres Ratio of water and milk in the final mixture = 35 : 55 = 7:11
If in a right angle triangle ABC, Angle B is a right angle. AB = 20 cm, BC= 21 cm if BD is perpendicular to AC find the length of BD?Â
Find the area of triangle having sides 7 m, 24 m, and 25 m.
If O is the orthocentre of ΔABC , if ∠BOC = 1000 then what is the measure of ∠BAC?
In ΔABC, PQ is parallel to BC If AP: PB= 3:5 and AQ= 3 cm, AC is equal to?
In ∆ABC , G is the centroid , AB = 12 cm, BC= 16 cm and AC = 20 cm , find GD, where D is the mid-point of BC?

In ∆ABC, AB = 5cm, BC = 10cm, and AC = 13cm then find out the value of cos A.
- 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).
If O is circumcentre of acute angled triangle ABC, if ∠ OBC = 150 then ∠BAC = ?
In ∆ABC, AB = 5cm, BC = 6cm and AC = 10cm then find out the value of cos A?