[محمد ابراهيم]

كاتب النص الأصلي : The morning

Ed has four children Al, Bo, Cy, and Di ( in order oldest to youngest) Bo is 4 years older than Cy and 12 years older than Di this year Ed notices that he is twice as old as Bo and the sum of the squares of the children's ages equals the square of Ed's age. If Di just became a math teacher, what is the sum of the children's ages?
هاتو لنشوف ؟

Al, Bo, Cy, and Di ( in order oldest to youngest)
هالجزء منطلع منو بالاتي
Al> Bo> Cy> Di

وهالجزء Bo is 4 years older than Cy
Bo= Cy+4 ---------------------------1

ومن هالجزء and 12 years older than Di
Bo=Di+12 ----------------------------2
ومن هالجزء Ed notices that he is twice as old as Bo
Ed=2 Bo-----------------------3

وباقي المعادلة الرابعة (أهم معادلة في المسألة )