book
Maths Puzzle
Numerical Ability
find the solution set:
x^2 + y^2 = 8 and 16x + 4y^2 = 80
Read Solution (Total 0)
book Other Question
Three varieties of rice cost Rs 10/kg,Rs 20/kg and 30/kg. In what ratio should they be mixed such that the mixture costs Rs 23/kg?
I am not sure how to solve this one
ln (square root of x +4) =1
and
log base 2 (x-3) + log base 2x - log base 2 (x+2) =2