Math Problem Statement
某商场一楼到二楼有一部自动扶梯匀速上行,甲、乙二人共同乘梯上楼。甲在乘扶梯同时匀速登梯,乙在恰好半程后,也开始匀速登梯,但登梯速度是甲的。甲乙二人分别登了36级、12级到达二楼,问这部扶梯静止时一楼到二楼的级数是多少?
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
Relative Motion
Formulas
N = v_T * t_A + 36
N = v_T * t_B + 12
v_T = -2v_A
Theorems
System of Linear Equations
Suitable Grade Level
Grades 9-12
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