Question

se 7/8 de um terreno valem r$ 21.000.00 qual eo valor de 5/48 do mesmo terreno

Answer 1

Aplicar regra de três simples: 
7/8 --------> 21.000
5/48 -------> x
x=2.500

Answer 2

• Vamos descobrir o preço do terreno primeiro =>

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