Question
The ratio of the ages of A and B is 3:4. Five years
later, the ratio of their ages will be 4:5. What are their present ages?Solution
Let the present ages of A and B be 3x and 4x, respectively. After 5 years: Age of A = 3x + 5 Age of B = 4x + 5 According to the problem: (3x + 5) / (4x + 5) = 4/5 Cross-multiplying gives: 5(3x + 5) = 4(4x + 5) 15x + 25 = 16x + 20 15x - 16x = 20 - 25 -x = -5 => x = 5 Present Ages: Age of A = 3x = 3(5) = 15 years Age of B = 4x = 4(5) = 20 years Correct Answer: a) A is 15 years, B is 20 years.
A cryoscopy is an important tool that detects ______ in milk.Â
Virtual water is
Any purchaser/person can send their sample to food analyst for getting analyzed provided thatÂ
Given below are two statements:
Statement I
Circulation of air over tropics is dominated by Hadley cell and Walker cell
Statemen...
Four fold food production occurred in
Trading of livestock products like milk powder, egg powder, meat, wool, leather etc. constitute
The Central Institute of Post-Harvest Engineering and Technology (CIFHET), is situated at:
What is the recommended fluoride concentration in drinking water to protect teeth against decay?
Controlled removal of water from fruit & vegetable is known as
The growing of grasses in rotation with grain crops as a soil conservation measure is called: _______.
Relevant for Exams:
