Question
Shreya uses up 70% of her income for expenses and is
left with Rs. 4,500. Calculate her total monthly income.Solution
ATQ,
Let the monthly income of Shreya be Rs. ‘x’.
ATQ,
(x – 0.70x) = 4500
Or, 0.30x = 4500
Or, x = 4500 / 0.30 = 15,000
So, the monthly income of Shreya = Rs. 15,000
x, y and z are real numbers. If x3Â + y3Â + z3Â = 13,x + y + z = 1 and xyz = 1, then what is the value of xy + yz + zx?...
The simple interest accrued on a sum at the rate of 10% p.a. for two years is Rs. 5,000.
Quantity I – What will be the compound interest on...
If (x - 1/x)2 = 3, then the value of x6 + 1/x6 equals
Quantity I – In how many ways letters of MOBILE can be arranged when vowels are always together.
Quantity II – In how many ways let...
If x1x2x3Â = 4(4 + x1Â + x2Â + x3), then what is the value of [1/(2 + x1)] + [1/(2 + x2)] + [1/(2 + x3)]?
If -5 ≤ x ≤ 3 and -1 ≤ y ≤ 0, then the minimum value of 2y – 3x is:
The total number of even factors of 25 × 33 × 52 is:
10 women and 12 men complete a certain piece of work in 30 days, if each women takes thrice the time taken by a man to finish the work.
Quanti...
Find x, given 5 (√5)x+6 = (√5)2x+7 :
The expression of (cot θ + cosec θ −1) / (cot θ − cosec θ+1) is equal to
