Solve the question on your notebook and check it by clicking (Answer and Explanation) below question.
A, B and C distribute Rs. 1,000 among them. A and C have Rs. 400, B and C Rs. 700. How much does C have?
a:b = 5:2. What is the value of (8a + 9b): (8a + 2b)?
The third proportional to x2-y2, x-y is?
A simple problem involving geometric progression (G.P)
In each term, a term of (x + y) is divided.
Hence the third term becomes x-y/(x+y)
What is the fourth proportional to the numbers 2, 5, 8.
2/5 = 8/x ; x = 40/2 = 20
Find the value of x when y = 5, if x varies directly as 4y-1 and x = 14 when y = 2.
Let z = 4y-1
When x = 14, y = 2, z = (4 × 2) – 1 = 7
Now, x varies directly as z = 4y-1
When y = 5, z = (4 × 5) – 1 = 19
x 14 7
y - 19
Therefore, x = (14*19)/7 = 38
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