On a certain sight-seeing tour, the ratio of the number of women to the number of children was 5 to 2. What was the number of me
n on the sight-seeing tour? (1) On the sight-seeing tour, the ratio of the number of children to the number of men was 5 to 11.
(2) The number of women on the sight-seeing tour was less than 30.
If the number f women on the sight-seeing tour was less than 30, the closest number that can be divided by 5 is 25, so we suppose that there were 25 women, so with the ratio women(5): children(2) we can apply a rule of three, so we multiply 25*2 divided by 2, now we know that there were 10 children, now with the ratio of men(11): children(5) we apply another rule of three, and multiply 10*11 and then divide it by 5, and now we know that there were 22 men in the sight-seeing tour.
Let x represent the amount of money you originally had. The algebraic expression would be: x-20+3×=80. If you want to solve the equation, it would be: 4x=100, and x=100÷4, which equals 25. So your original money was $25.
