Question
Income of Ravi is Rs. 52,800, out of which he spent 35%
on daily expenses, 5% on phone bills and saves the rest. If his income is increased by 15% and he still saves the same, then what is the increase (in Rs.) in his overall expenses?Solution
ATQ, Total expenses of Ravi = 52,800 * (0.35 + 0.05) = 52,800 * 0.40 = Rs. 21,120 Therefore, savings of Ravi = 52,800 - 21,120 = Rs. 31,680 His increased income = 52,800 * 1.15 = Rs. 60,720 His new expenses = 60,720 - 31,680 = Rs. 29,040 Required increase in his expenses = 29,040 - 21,120 = Rs. 7,920
If 27x3 - 8y3 = (3x - Ay) X (Bx2 + 4y2 + Cxy), then find the value of 3 X (2A + 6B) - 2C.
If both the roots of x 2 Â + kx + 49 = 0 are real and equal, then find the value of 'k'.
If (x –1.3)3+(x–1.4)3+(x–1.5)3 = 3(x–1.3)(x–1.4)(x–1.5), Then x = ?
x = 7 - 4√3 then the value of x³+1/x³ is equal to?
If, 2x + y = 13, and 2xy = 12, and 2x > y, then find the value of 8x³ – y³.
If √t + (1/√t) = 5, then find the value of t + (1/t).
If √d + (1/√d) = 6, then find the value of d + (1/d).
A sum of Rs. 25,000 is invested in SIP 'G' which offers 7% p.a. simple interest for 7 years. The interest received from SIP 'G' is invested in SIP 'H' w...