Question
Twelve years ago, the ratio of
the ages of Amit and Bheema was 4:5. Currently, the average age of Bheema and Chinu is 33 years, and the ratio of the present ages of Amit and Chinu is 3:2. What is the ratio of the present ages of Bheema and Chinu?Solution
ATQ, Let age of Amit and Bheema, 12 years ago was 4a years and 5a years respectively. Present age of Chinu = 33 × 2 – (5a + 12) = (54 – 5a) years ATQ; (54 – 5a)/(4a + 12) = 2/3 Or, 162 – 15a = 8a + 24 Or, 23a = 138 Or, a = 6 So, present age of Bheema = 5 × 6 + 12 = 42 years Present age of Chinu = 54 – 5 × 6 = 24 years Desired ratio = 42:24 = 7:4
Chemical equation is balanced according to the law of
A man cannot see clearly beyond 10 meters. The disease he suffers from :
Consider the reaction-
Copper sulphate solution (blue) + Iron → Iron sulphate soluton + Copper What is the colour of the iron sulphate solution?
The Weight of an object on Earth is 600 N. What will be its weight on moon?
Heat from the sun reaches earth by the process of –
Which part of the human brain controls voluntary actions?
A bottle of sodalime is grasped by the neck and swung briskly in a vertical circle, Near which portion of the bottle do the bubbles collect?
The substance which conducts current in the solid state is –
A positively charged particle enters a uniform electric field directed downward. The force acting on the particle is:
Which of the following gases is also known as a 'Stranger' gas?
Relevant for Exams:
