Question
The ratio of ages of A, B and C is 2 : 4 : 5 and sum of
their ages is 77. Find the ratio of A's age to B's age ten years hence.Solution
Let the ratio of ages of A, B, and C is 2x, 4x, and 5x respectively. ATQ, 2x + 4x + 5x = 77   11x = 77  x = 77/11  x = 7 10 years hence age of A = 2 x 7 + 10 = 14 + 10 = 24 10 years hence age of B = 4 × 7 + 10 = 28 + 10 = 38 The ratio of ages of A to B 10 years  = 24:38 = 12:19
Which chemical compound is used in the indelible ink for elections?
Whitening of hair is caused by the deficiency of _________?
What components make up the mixture known as Producer gas?
What is the chemical formula of Urea, the best nitrogenous fertilizer?
Pentane has _____ structural isomers.
Themes, Variants, Customize etc., are elements of which tab of MS-PowerPoint 2019?
Which statement is NOT correct regarding Zinc-ion batteries?
What causes the black color of Black Soil?
In the vulcanization process, natural rubber is heated with which element to enhance its properties?
The pH value of an acidic solution is: