Let the work ‘M’ = 9 units (LCM of 9 and 3) Efficiency of P = 9/9 = 1 units Efficiency of Q = 9/3 = 3 units Efficiency of P, Q and R = (9 × 12)/9 = 12 units per day Efficiency of R = 12 – (1 + 3) = 8 units per day Time taken by R to finish work ‘N’ = 108/8 = 13.5 days
If the sum of three numbers is zero, then which of the options below will always be equal to the value of the sum of the cubes of those numbers?
4x +4y =20 and 4x+y =64 then find the value of 4x-y +4y-x.
Atul has Rs.500 with him. He invested 30% of the amount at 5% p.a. for 6 years and rest at 20% p.a. for 4 years. Find the sum of simple interests receiv...
`25(2/3)+11(1/9)+16(4/5)xx6(5/12)` = ? -`632/45`
(288 ÷ 8)² × (144 ÷ 24)³ = 24 × ? × (51840 ÷ 20)
125 sweets were distributed equally among children in such a way that the number of sweets received by each child is 20% of the total number of children...
If x ,y,z are three integers such that x +y = 8,y +z =13 and z +x =17,then the value of x2 /yz is:
If x2 – xy + y2 = 16 and x4 + x2y2 + y4 = 320 then find x2 + xy + y2...
If a = 901, b= 903, and c= 906, then find the value of a³ + b³ +c³ –3abc?
