Question
The ratio of the present age of 'E' to that of 'F' is
2:3. If six years hence, the ratio of their ages will become 3:4, find the sum of their ages, five years ago from now.Solution
Let the present ages of 'E' and 'F' be '2z' years and '3z' years, respectively. ATQ, (2z+6)/(3z+6) = 3/4 Or, 4×(2z+6) = 3×(3z+6) Or, 8z+24 = 9z+18 Or, 9z−8z = 24−18 So, z = 6 Present age of 'E' = 2z = 2 × 6 = 12 years Present age of 'F' = 3z = 3 × 6 = 18 years Required sum = (12 - 5) + (18 - 5) = 7 + 13 = 20 years
Panama wilt in banana is caused by
When one single gene starts affecting multiple traits of living organisms, this phenomenon is known as…………………..
...Dispersal of weed seeds from mother plant to other place by several mechanisms, Barachory is dispersal by:
In which of the following stage cell cycle DNA replication take place?
When fertilizer nutrients are added during the process of compositing, then the product is called as
Spongilla is the common example which belongs to……………….Phylum of Animal Kingdom.
 The United Nations General Assembly (UNGA) has declared 2023 as the International Year of Millets (IYM). The leading country in millet production is
Bean common mosaic disease is caused by
Japanese arrangement of flowers is known as:
Keratin protein is found in
Relevant for Exams:
