Hi. I can't figure where to put SAT Math Questions. The test is on Sat. and we have a few questions we can't yet figure out how to do:
Q3. A 0, 3 or 5 will be placed in each square of the grid. The sum in each row is equal to the number to the right of that row and the sum in each column is equal to the number below the column. What will row X be when the boxes are all filled out correctly. (I hope you can figure out the picture.
Row Sum W 0 5 X 0 13 Y 0 0 Z 3 18 Sum 15 8 3 10
Correct answer: (A) 5,3,0,5
How did they get the correct answer. We eliminate B, D, and E because we know the 3rd column of row X is a 0. However, both A and C look possible as far as I can tell.
Best is if you can answer the question by showing us a method for converting the info into math equations.
Q1. There are just enough microscopes (variable name M), test tubes (T) and calculators (C) so that every 3 students have to share a microscope, every 4 students have to share a test tube and every 5 students had to share a calculator. The sum of microscopes, test tubes and calculators is 94. How many students are there?
Correct answer 120 students
So far, I've got M+T+C=94. How do we turn "3 students to a calculator", "4 to a microscope", etc. into a math statement to solve this problem
Thank you for helping.