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Initial sum of the ages of 8 children = 9 x 8 = 72 years Ages of the children leaving: 9 + 7 = 16 years and 9 + 5 = 14 years, Sum of the ages of children leaving = 16 + 14 = 30 years Sum of the ages after two children left = 72 - 30 = 42 years Sum of the ages of 2 new children = (9 + 4) x 2 = 26 years Total sum of the ages with new children = 42 + 26 = 68 years Number of children now= 8 - 2 + 2 = 8 New average age = 68/8 = 8.5 years
If I is the incentre of ΔABC , if ∠ BAC = 300 , then what is the measure of ∠ BIC?
If y = 5x + c passes through point A(5, 2), what is the value of c?
...In a circle with center O and radius 10 cm, two chords AB and CD are parallel and 6 cm apart. If the length of chord AB is 16 cm, what is the length of ...
AB and AC are two Chords of a circle with centre O. M and N are the mid points of the chords respectively. The line OM and ON are extended which interse...
In the given figure, ABCD is a square of side 14 cm. E and F are mid points of sides AB and DC respectively. EPF is a semicircle whose diameter is EF. L...
Find the area of triangle having sides 3m, 4m, and 5m.
AB and AC are the two tangents to a circle whose radius is 6 cm. If ∠ BAC = 60o, then what is the value (in cm) of √(AB2 + AC...
In a ∆ ABC, the angle bisector of ∠A, ∠B, ∠C meet at point I, if ∠AIC is double of equilateral ∆ , then find the ∠ABC =? (in degree)
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