Question
The present ages of 'Isha' and 'Riya' are in the ratio
5:6. Two years from now, Isha’s age will be 20% less than Riya’s age. What is Isha’s current age?Solution
Let the present ages of Isha and Riya be 5x and 6x years respectively. According to the question, (6x + 2) × 0.8 = 5x + 2 Or, 4.8x + 1.6 = 5x + 2 Or, 0.2x = 0.4 So, x = 2 Present age of Isha = 5 × 2 = 10 yearsÂ
Noise is measured in –
If the phase difference between two points is 120° for a wave with velocity of 360 m/ and frequency 500 Hz, then path difference between the two points...
Which gas turns lime water milky?
When milk is churned, the cream separates from it clue to:
Name the largest gland found in human body :
What is the ph of blood?
Which of the following constitutes a food chain ?
A cylindrical metal wire is reformed so that its length decreases by 20% with no change of volume. Its
resistance decreases by:
Bakelite is a polymer which is used in the manufacturing of buckets and electrical switches. What are the monomers of bakelite?
Electrostatic precipitator is used to control —
Relevant for Exams:
