Question
Present ages of ‘A’, ‘B’ and ‘C’ are in the
ratio 10:12:15, respectively. If present average age of ‘A’ and ‘C’ is 50 years, then find the age of ‘B’ when ‘C’ was 24 years old?Solution
Let the present ages of ‘A’, ‘B’ and ‘C’ be ‘10x’ years, ‘12x’ years and ‘15x’ years, respectively. ATQ; (15x + 10x) ÷ 2 = 50 Or, 25x = 100 So, x = 4 So, present age of ‘C’ = 15 × 4 = 60 years Present age of ‘B’ = 12 × 4 = 48 years Difference between the ages of ‘B’ and ‘C’ = 60 – 48 = 12 years So, age of ‘B’ when ‘C’ was 24 years old = 24 – 12 = 12 years
Which of the following disease is not caused by nematode?
The spread of numerical value from the mean value is called?
The process of separating lint from seed in cotton is called ___
The first stable compound formed in the photosynthesis of C3 plants is :
Every year the World Wetland Day is celebrated on 2nd February. The theme for the year 2023 was ____
The fertilizer having all the three primary major nutrients viz. N, P, K is termed as
Which of the following is known as horizon of eluviation?
1 bale of jute is equal to _____kg.
Objectionable weed in wheat field is _____
Dispersal of weed seeds from mother plant to other place by several mechanisms, Barachory is dispersal by:
Relevant for Exams:
