Question
A man sold an article for 20% profit. If the cost price
of the article was 'y%' less, then he would've earned 50% profit by selling the article at the same price. Find the value of 'y'.Solution
Let the initial cost price of the article be Rs. '100x'
So, selling price of the article = 100x X 1.2 = Rs. '120x'
So, new cost price of the article = 120x ÷ 1.5 = Rs. '80x'
So, y = {(120x - 100x) /100x} X 100 = 20%
Given that (3a + 7b = 54) and (ab = 24), determine the value of (9a2 + 49b2).
The certain sum amounts to Rs11313.5 in 2(1/2) years at 12% p.a., interest compounded 10 months. The sum (in Rs) is:
Find the number of zeroes in 18 × 125 × 20 × 32.
If (2a + b)/(3b - 2b) = 13/2 then 'b' is what percent of 'a'?
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   = ?If (a + b) = 17 and (a2 + b2) = 145, then find the value of (a × b).
If x² + y² + z² = xy + yz + zy (x≠0), then the value of (5x+3y-4z)/2x is
when x =4 and y =-6 then find the value of 27x³ +58x²y +31xy² +8y³?
What will come in the place of question mark (?) in the given expression?
?2 = (392 × 224) ÷ (112 × 28) + 62
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