self Maths Puzzle

Girlie gives chocolates to her children. If she give 7 chocolates to each child, she will have 13 chocolates left. If she gives 9 chocolates to each child, she will have 5 chocolates left.
a) Find the number of children.
b) Find the number of chocolates.

Read Solution (Total 2)

self Other Question

If P,R,T are the area of a parallelogram, a rhombus and a triangle standing on the same base and between the same parallels, which of the following is true?
(A)RT
(C)R=P=T
(D)R=P=2T
I have some doubts in the answer of todays puzzle on 18/9/12. you are given there are two positive roots.But p(0) =4 and when you give any values > 0 for x there is no sign change.so intermediate value theorem there will be no roots. also I think that Descartes rule of sign doesn"t assure the roots. please clarify my doubts. I expect your valuable comments