Question
βXβ, βYβ and βZβ divide a certain sum of
money among themselves. The average of the amount with them is Rs. 2700. Share of βXβ is 12.5% more than share of βYβ and 10% less than share of βZβ. What is the share of βYβ (in Rs.)?Solution
Let share of βYβ = Rs. 80x Share of βXβ = 80x + {12.5% of 80x} = Rs. 90x Share of βZβ = (10/9) Γ 90x = Rs. 100x Total amount with βXβ, βYβ and βZβ, together = 2700 Γ 3 = Rs. 8100 So, 90x + 80x + 100x = 8100 Or, 270x = 8100 Or, x = 30 So, share of βYβ = 80x = 80 Γ 30 = Rs. 2400
The graphs of the equations 3x-20y-2=0 and 11x-5y +61=0 intersect at P(a,b). What is the value of (a² + b² − ab)/(a² − b²...
If, 4x2Β + y2Β + 12x + 6y + 18 = 0, then find the value ofΒ (2x + y)/(y + 6x).
If 70% of βyβ is 25% more than 30% of 140, then value of βyβ is:
Simplify:
5x + 7y - [(10x + 4y) - (3x + 2y) + 5y] - 3xWhat is the value of (aΒ² + bΒ²+4cΒ²- ab-2bc-2ca) (a + b+2c):
βaβ is directly proportional to βbβ. If at a=30, the value of βbβ is 20% greater than βaβ, then find the value of βaβ when b=54.
...Let {x + (1/x)} = 4, then Determine the value of {xΒ² + (1/xΒ²)}
If x + 1/x = 5 then find out the value of xβ΅ + 1/(xβ΅)?
Find the value x2 + y2, if xy = 13 and x + y = 7.
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...