Let k be the amount of money Ken gets.
3k is how much money Susan gets.
Set up an equation: k+3k=20
4k=20
k=5
Ken gets 5 pounds, Susan gets 15.
Multiply both sides bt 28: the LCD of the three fractions, to get rid of them.
8x-14x=21x+28.
-6x=21x+28
-27x=28
x=-28/27
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I accept the challenge.
$${\frac{{\mathtt{4}}}{\left({\frac{{\mathtt{30.7}}}{{\mathtt{100}}}}\right)}} = {\frac{{\mathtt{4\,000}}}{{\mathtt{307}}}} = {\mathtt{13.029\: \!315\: \!960\: \!912\: \!052\: \!1}}$$
$${\mathtt{30\,000\,000}}{\mathtt{\,\times\,}}{\mathtt{67\,000\,000}} = {\mathtt{2\,010\,000\,000\,000\,000}}$$
$${\mathtt{200\,000\,000}}{\mathtt{\,\times\,}}{\mathtt{75}}\% = {\mathtt{150\,000\,000}}$$
(4*2)+(6/3)-5=8+2-5=10-5=5.
7+(7/7)+(7*7)-7=7+1+49-7=50.
It is 50, unless you made some mistake with order of operations.
Best forum of 2015 so far.
To be more specific, what did the anons do to you?
