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alexandr1967 [171]
3 years ago
9

Vendí por 30€ a la cual le había incrementado el 12% una prenda de ropa. Calcula el precio de la prenda antes del incremento.

Mathematics
1 answer:
jek_recluse [69]3 years ago
4 0

Answer:

18€

Step-by-step explanation:

Given data

Selling price= €30

increase= 12%

Cost price= ???

We know that

% increase= selling price- cost price/cost price*100

let the cost price be x

12= 30- x/x*100

cross multiply

12*100= (30- x)100

1200= 3000-100x

1200-3000=-100x

-1800=-100x

x= 1800/100

x= 18

Hence the price before the increase is 18€

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