The ratio of y to x is equal to 3 and the sum of y and x is 80, what is the value of y ?
Solution
Correct Answer: Option D
Solution:
যদি y : x = 3 এবং x + y = 80 হয় তবে y = ?
Given, y/x = 3 ........... (1)
এবং y + x = 80 ........ (2)
From (1), y/x = 3
y = 3x
(1) নং এ y এর মান বসিয়ে পাই
y + x = 80
=> 3x + x = 80
=> 4x = 80
x = 20
(1) নং এ x এর মান বসিয়ে পাই
y/x = 3
=> y/20 = 3
y = 60
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