If john gives sally $5 sally will twice the amount of money that john will have. originally there was a total of $30 between the two of them. how much money did john intially have?

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Why is it so easy to buy on impulse and overspend with a credit card? what could you do to counteract this tendency?