Question
An article is marked x% (0 < x < 40) above its cost
price. It is sold by giving x/2% discount on its marked price. If there is a profit of 10(1/2)%, then what is the value of x?ÂSolution
Marked Price (MP): M = C (1 + x/100) Selling Price (SP) with discount%: SP = M (1 - x/200) Profit of 10%: SP = C ×1.105 ATQ-  C × 1.105 = C (1 + x/100) (1 - x/200)  1.105 = (1 + x/100) (1 - x/200) 1.105 = 1 + x/200 - (x 2)/20000  0.105 = x/200 - (x2)/20000  2100= 100x - x 2  x2 - 100x + 2100 = 0 x2 - 70x-30x + 2100 =0 x(x-70)-30(x-70) =0 x=30 Since x must be less than 40: x=30 So, the value of x is 30.
√323.89  × (3.20) ÷ 9.02 =?
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
23.98% of 624.99 = 19.98% of ? + 14.98% of 639.99
Direction: Please solve the following expression and choose the closest option
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
12, 16, ?, 36, 52, 72Â
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
(6859.01)1/3  × 10.11 × 14.47 ÷ 20.32 = ? + 45.022
33.33% of 809.891 + 66.66% of 212.91 = ?
Relevant for Exams:
