Question
The ratio of age of A and B after 8 years is 4:5
respectively. The ratio of age of A and C 6 years ago is 3:4 respectively. If the present average age of A and C is 30 years, then find the present age of C.Solution
Let the age of A and B after 8 years be 4x years. and 5x years respectively. And the present age of C is ‘y’ years. So, (4x – 14)/ (y – 6) = 3/4 16x – 56 = 3y – 18 16x – 3y = 38……………. (1) And 4x – 8 + y = 60 y = 68 – 4x…………………. (2) From equations (1) and (2), we get. 16x – 204 + 12x = 38 28x = 242 x = 8.6 Present age of C = 62 -(4 ×8.6) = 27.6years
What is the primary objective of the Grow-out Test in seed certification?
Given below are two statements:
Statement I
A vector in a GIS system is the graphic or visual data model
Statement II
AR...
Bacteria responsible for making curd are:
The moulting hormone in insects is secreted by which part of their body?Â
Agricultural fields which are used as rainfed storage structures called?
Plant available potassium refers to:
In sunlight, a rose appears red. In green light, the same rose appears –
Mating of wider degree relation not closer one and result in uniformity is known as?
Physical condition of soil resulted due to tillage is
As per Census 2011, there are about 263 million agricultural workers in India. Out of this, women percentage is how much ?
Relevant for Exams:
