Question 1157198

Barry spent 1/5 of his monthly salary for rent and 1/8 of his monthly salary for his utility bill. If $1188 was left, what was his monthly salary?
<pre>Fraction of monthly salary spent: {{{matrix(1,3, 1/5 + 1/8, "=", 13/40)}}}
Fraction of monthly salary remaining: {{{matrix(1,3, 1 - 13/40, "=", 27/40)}}}
With S being the monthly salary, and with {{{27/40}}} representing $1,188, we get the following PROPORTION: {{{matrix(2,3, (27/40)/1, "=", "1,188"/S,
27/40, "=", "1,188"/S)}}}
27S = 40(1,188) ------- Cross-multiplying
Monthly salary, or {{{highlight_green(matrix(1,5, S, "=", 40("1,188")/27, "=", "$1,760"))}}}