Question
'U' spends 25% of his monthly income on food, 30% on
rent, and 15% of the remaining amount on insurance. He saves the rest in a savings plan that gives simple interest at a rate of 11% per annum. Find the amount 'U' will get at the end of the year if his spending on insurance is Rs. 1000 per month.Solution
Let monthly income = Rs. 100c Spending on food = 100c Γ 0.25 = Rs. 25c Spending on rent = 100c Γ 0.3 = Rs. 30c Spending on insurance = (100c β 25c β 30c) Γ 0.15 = Rs. 6.75c Savings = 100c β 25c β 30c β 6.75c = Rs. 38.25c Now, 6.75c = 1000 Or, 38.25c = 5666.67 Total interest paid by the savings plan: = P Γ r Γ t = 5666.67 Γ 11 Γ 1/100 = Rs. 623.33 Amount = 5666.67 + 623.33 = Rs.6290
I. 144xΒ² - 163x - 65 = 0
II. 91yΒ² - 128y -48 = 0
if x satisfies 3xΒ² β 5x β 12 = 0, find the sum of reciprocals of roots.
I. p² - 10p +21 = 0
II. q² + q -12 = 0
l).Β 3p + 2q = 27
ll).Β 4p - 3q = 2
I. x2 - 11x + 24 = 0
II. yΒ² - 5y + 6 = 0
Solve the quadratic equations and determine the relation between x and y:
Equation 1: 4xΒ² - 12x + 9 = 0
Equation 2: 2yΒ² + 8y + 6 = 0
Roots of the quadratic equation 2x2 + x β 528 = 0 is
The following question contains two equations as I and II.You have to solve both equations and determine the relationship between them.
I). aΒ² -...
I. 2x2 β 10x β 48 = 0
II. y2 β 16y β 297 = 0
I. (x13/5 ÷7) = 5488 ÷ x7/5
II. (y2/3 × y2/3 ) ÷ √4 = (343y)1/3...