Practice Quiz

SAT Math Practice Exam

Category - Mathematics - Hard

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The combined weight of two boxes is 400 pounds. If twice of the weight of one box is 100 pounds less than the combined weight of the two boxes, find the weight of second box.
  1. 100
  2. 200
  3. 250
  4. 300
Explanation
Answer C- Assume the weight of one box is W.
Given 2 x W = 400-100 or W = 150
The weight of second box is 400 -150 = 250

Key takeaway: First you convert the word problem into a simple equation with an assumed variable. Then solve simple equation getting the variable alone on one side of the equal sign. Be careful and manipulate the value of variable to find further the solution of the question asked.
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