Problema Solution
if y varies directly as x, find the percent of increase in y, if x is increased in y, if x is increased by 25%
Answer provided by our tutors
y varies directly as x means
y/x = k, where k is constant
y = kx
if x is increased by 25% the new value for x will be x + 0.25x = 1.25x then for y we have
y = k*1.25x
y = 1.25(kx) = kx + 0.25kx
y is increased by 25% as well.