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The cost of a magazine is 125 pesos. If this is 1 1/4 of the cost of the magazine last year, how much was the cost a magazine last year?

Sagot :

Cost of magazine last year: x

Equation:
Method A:
1 ¹/₄ (x) = 125
1.25x = 125
1.25x/1.25 = 125/1.25
x = 100

Method B:
Convert mixed fraction to improper fraction.
⁵/₄(x) = 125
⁴/₅ [⁵/₄(x) = 125 ] ⁴/₅
x = (25)(4)
x = 100

ANSWER:  The cost of the magazine last year was Php 100.