Let C’s present age be x years. So, A’s present age = (x + 7) years And B’s present age = (x + 7 + 5) = (x + 12) years According to question, => x + 7 + x = 21 => 2x = 14 => x = 7 Required total sum = x + (x + 7) + (x + 12) = 3x + 19 = 40 years
A sphere is melted to form 81 identical cylinders. If radius of each cylindrical is 1/3rd of the radius of sphere and height of each cylinder...
A square is converted into a rectangle by increasing its length by 50 % and decreasing its width by 20%. Which of the following statements is true?
A rectangular plot has an area of 490 m². If the length of the rectangular plot is 24.5 m. Find the perimeter of the rectangular plot.
If two complementary angles are in the ratio of 5:1, find the greater angle.
Perimeter of a square is equal to the perimeter of a circle that is 792 cm. Find the ratio of the side of the square to the radius of the circle.
The circumference of a circle is equal to the perimeter of a rectangle whose length and breadth are in ratio 10:11, respectively. If the area of the rec...
A tank 60m long, 45m broad and 18m deep is dug in a ground 2000 m long and 45m wide. By how much will the level of the field rise if earth dug out of t...
A wire is bent to form a square whose sides are of 11 cm. If the same wire is bent to form a circle, then find the area (in cm2) of the circl...
A kid has toys of three different shapes and he has labelled them as 'A', 'B' and 'C'. The following is also known about the toys: (Take π = 22/7)
