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Let the total marks of the test be ‘x’ Therefore, marks scored by P = 0.30x Therefore, passing marks of the test = 0.30x + 45 Marks scored by Q = 0.40x Also, passing marks of the test = 0.40x – 21 Therefore, 0.30x + 45 = 0.40x – 21 Or, 0.1x = 66 Or, x = 66/0.1 = 660 Therefore, total marks of the test = 750
In a club of singers and dancers, 10% of the artists are absent on a particular day and 90% of the present artists are dancers. If 2,250 singers are pr...
1/3 + 1/15 + 1/35 + 1/63 + 1/99 = ?
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?
If x, y and z are real numbers such that (x-5)2+(y-7)2+(z-9)2= 0 then (x+y+z) is equal to
The area of △ ABC is 44 cm2 . If D is the midpoint of BC and E is the midpoint of AB, then the area of △ BDE is
If x + 1/x = 5 then find out the value of x⁵ + 1/(x⁵)?
If (a + b) = 7 and ab = 10, then find the value of (a 2 + b 2 ).
In an A.P 41st term is 50, then the sum of 81 terms of that A.P is:
If 
= 2 then find
