The suit cost 119 euros. How much cost the pants if it is 50% cheaper than the jacket.

Correct result:

a =  39.6667 Eur


a+b = 119
a = (1-50/100) b

a+b = 119
a = (1-50/100)•b

a+b = 119
100a-50b = 0

a = 119/3 ≈ 39.666667
b = 238/3 ≈ 79.333333

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