Question
Monthly savings of ‘A’ is Rs. 700 more than his
monthly expenditure and his total monthly income is Rs. 6500. If his monthly income is increased by 40% and his monthly savings is increased by 37.5%, then find the increase in his monthly expenditureSolution
Monthly savings of ‘A’ = (6500 + 700)/2 = Rs. 3600 Monthly expenditure of ‘A’ = 6500 – 3600 = Rs. 2900 Increased monthly expenditure of ‘A’ = 1.40 × 6500 – 1.375 × 3600 = Rs. 4150 Desired increase = 4150 – 2900 = Rs. 1250
Solve for x in the equation: 3(x + 2) + 2(2x - 5) = 5x + 9
If x = 19, then the value of x5 - 20x4 + 20x3 - 20x2 + 20x - 1 is
Given a triangle with two sides measuring 12 cm and 16 cm, which of the following cannot be a possible length for the third side?
The mean age of 30 students was calculated as 15 years. However, it was later discovered that one student's age was mistakenly entered as 15 years inste...
In a triangle ABC, a point D lies on AB and points E and F lie on BC such that DF is parallel to AC and DE is parallel to AF. If BE = 4 cm. EF = 6cm. th...
If a = 32, b = c = 31, then find the value of a 3 + b 3 + c 3 – 3abc.
If x3 + y3 = 9 and x + y=3 then the value of x4 + y4 is:
105, 111, 123, 141, ?, 195
Let {x + (1/x)} = 4, then Determine the value of {x² + (1/x²)}
