摘要
1. Find the shortest side of a triangle whose perimeter is 120, if the ratio of two of its sides is 4 : 3 and third side is 20 less than the sum of the other two. (A) 10 (B) 20 (C) 30 (D) 40 (E)
出处
《上海中学数学》
2010年第1期6-6,13+16+25+40+44+47+49+51+64+66+89,共1页