Question

Se 7/8 de um terreno valem R$ 21000,00, qual é o valor de 5/8 do mesmo terreno?

Answer 1

7/8 = 21000

5/8 = x

basta multiplicar cruzado.

13125 = 7/8.x

x= 15000

Answer 2

• Vamos descobrir o preço do terreno primeiro =>

$\tt 21,000\div \:7\cdot \:8\\\\\\\tt =300\cdot \:8\\\\\\\boxed{\boxed{\tt =24000 }}\\\\\\\tt 24000\div \:48\cdot \:5\\\\\\\tt =500\cdot \:5\\\\\\\to \large \boxed{\boxed{{\tt =2500}}}$