mr wong cuts a coil of wire into two pieces in the ratio 5:1 the leghth of the coil of wire is 180 cm.how long is the shorter piece of wire

ratio = 5 : 1
sum ratio = 5+1 = 6
Long = 180 cm
shorter piece = 1/6* 180 cm
                      =180 cm / 6
                      = 30 cm

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