Question
Currently, the ages of Rahul and Ritesh are in a ratio
of 7:3. If we look back three years, the ages of Ritesh and Ramesh had a ratio of 1:3. Knowing that Rahul is 6 years younger than Ramesh, can you determine the current average age of Rahul, Ritesh, and Ramesh?Solution
Let the present ages of Rahul and Ritesh are 7x years and 3x years respectively. Age of Ritesh three years ago = 3x – 3 years Age of Ramesh three years ago = 3 × (3x – 3) = 9x – 9 years Present age of Ramesh = 9x – 9 + 3 = 9x – 6 years According to question: 9x – 6 – 7x = 6 2x = 12 x = 6 So, the present ages of Rahul, Ritesh and Ramesh are 42 years, 18 years and 48, years respectively. Present average age of Rahul, Ritesh and Ramesh = (42 + 18 + 48)/3 = 36 years
Which of the following describes a frameshift mutation?
Ratooning is practiced in which of the following crops?
Which type of cooperative primarily deals with the marketing of agricultural produce?
How many pollen grains are developed from a pollen mother cell?
Powdery mildew is a common fungal disease that affects which part of the plant?
The Scheme for promotion of Hybrid Seeds aims to increase the income of which category of farmers?
The let-down of milk in cow is due to release of which of the following hormone?
Which of the following rhizobium stains is useful for Biological Nitrogen Fixation in Alfalfa?
Which principle of IPM encourages the use of biological control agents, such as Predators or parasitoids, to manage pests?
Which pest acts as a vector for many diseases and affects crops like lablab, black gram, and green gram with silvering leaves?
Relevant for Exams:
