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An article was sold for Rs. y by giving a discount of x%. What was the marked price of the article?
On a certain sum the simple interest for years is 3/4 of the sum what is the rate of interest ?
If the discount is equal to one fifth of the marked price and the loss is half the discount, then the percentage of loss is-
A barrel contains a mixture of wine and water in the ratio of 3 : 1. How much fraction of the mixture must be drawn off and substituted by water so that the ratio of wine and water in the resultant mixture becomes 1 : 1 ?
How many men needed to be employed to complete the whole work in 5 days if 15 men can complete 1/3 of the work in 7 days ?
15 men complete the work = 7 × 3 = 21 days.
∴ Required number of men =
The square root of is:
If a2 + a + 1 = 0 then the value of a9 is :
a2 + a + 1 = 0
⇒ (a – 1) (a2 + a + 1) = 0
∴ a3 – 1 = 0 ⇒ a3 = 1
∴ a9 = 93×3 = 1
In a ∆ABC, if 2∠A = 3∠B = 6∠C, value of ∠C is :
2∠A = 3∠B = 6∠C
∴ ∠A : ∠B : ∠C = 3 : 2 : 1
In a rhombus ABCD ∠A = 60° and AB = 18 cm. What is the length of diagonal BD ?
AB = AD = 18
∴ ∠ABD = ∠ADB =
AB = BD = AD = 18 cm.
The radii of the base a cylinder and a cone are equal and their volumes are also equal. What is the ratio of their heights ?
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