Question
Tap A is 200% more efficient than tap B. Both the taps
together can fill the tank in 6 hours. Find the time taken by tap C, which is 100% more efficient than tap B, to fill the tank alone.Solution
Let, time taken by tap B to fill the tank be x hours,
So, time taken by tap A to fill the tank = x/3 hours According to question,
1/x + 1/(x/3) = 1/6
1/x + 3/x = 1/6
x = 24 So, time taken by tap C to fill the tank = 24/2 = 12 hours
The cost of diamond varies directly as the square of its weight. A diamond broke into four pieces with weights in the ratio 1: 4: 5: 6. if the loss in t...
The ratio of the angles ∠A and ∠B of a non-square rhombus ABCD is 7:5, then the value of the ∠C is
If in a ΔABC, D is a point on BC such that BD = 5cm , BC = 9 cm then what is ratio of area of ΔABD to area of ΔADC ?
If in a ΔABC, D is a point on BC such that BD = 1cm , BC = 3 cm then what is ratio of area of ΔABD to area of ΔADC ?
An angle is equal to 3/7 of its supplement. The angle is :
If G is the centroid and AD, BE, CF are three medians of ∆BDG with area 6cm 2 , then the area of ∆ABC is?
What will be circumradius of a right angle triangle whose base is 9 cm & height is 40 cm ?
At the centre of a circle of 20 cm radius, the angle made by an arc of 24(4/9) cm length is
Relevant for Exams:
