Question
At the time of their marriage, the ratio between the
ages of Reena and Rahul was 9:10 respectively. After ‘y’ years of their marriage, a daughter will be born. The sum of the ages of the couple and her daughter after (y+2) years of their marriage will be 98 years. Find out the value of ‘y’. (Here Reena and Rahul are a couple.)Solution
At the time of their marriage, the ratio between the ages of Reena and Rahul was 9:10 respectively. Let’s assume the ratio between the ages of Reena and Rahul, at the time of their marriage was ‘9a‘ and ‘10a‘ respectively. After ‘y’ years of their marriage, a daughter will be born. The sum of the ages of the couple and her daughter after (y+2) years of their marriage will be 98 years. 9a+(y+2)+10a+(y+2)+2 = 98 Here two variables are available in the single equation and we don’t have any additional information to form more equations. So the answer cannot be determined from the given information in the question.
Which of the following types of coal is called a brown coal among the following?
Consider the reaction-
Copper sulphate solution (blue) + Iron → Iron sulphate soluton + Copper What is the colour of the iron sulphate solution?
Which of the following is NOT correct about the use of Quick lime?
A metal ball of volume 0.02 m³ is immersed fully in water. Find buoyant force. (Take g=10 m/s2, ρ = 1000 kg/m3)
Which among the following is produced using ‘Haber Process’?
If ice floating on water in a vessel melts, the water level in the vessel .

Study the following questions carefully and choose the right answer:
The main thinking part of the brain is the _______?
Which of the following is not an algae?
Kindly Study the following questions carefully and choose the right answer.
Which of the following is/are true with respect to Amoeba?
I...