Question
If Workers A and B work together for 12 days, how much
of the total 500 units of work will they complete? Direction: Five workers – A, B, C, D, and E – are working on a construction project to complete 500 units of work. Each worker works different numbers of hours per day and has varying work efficiencies, which are calculated as the number of units completed per hour. The following table shows the daily working hours and the efficiency (units per hour) for each worker:Solution
Total work done by A in 12 days = 12 × 8 × 2 = 192 units. Total work done by B in 12 days = 12 × 6 × 3 = 216 units. Total work by A and B = 192 + 216 = 408 units.
If x + y + xy = 118, such that x < y and both 'x' and 'y' are positive integers, then find minimum value of (x + y) .
If, ( a + b = 10 ) and ( a² + b² = 58 ), then find the value of (a³ + b³).
If √x + 1/√x = 2 then find the value of 3x2 + 1/3x2.
If x2 – 5x + 1 = 0, then find the value of {x2 + (1/x2)}.
Find the value of ‘x’ in the given expression
(49/16)x × (64/343)x-1 = 4/7
if a2 + b2 + c2 = 2(4a -5b -9c)-122 , then a-b-c = ?
If a + (1/a) = 2, then find the value of (a5 + a3 + 6)/(7a – 5).
If (a + b) = 7 and ab = 10, then find the value of (a 2 + b 2 ).
If √b + (1/√b) = 11, then find the value of b + (1/b).
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