exam Maths Puzzle Numerical Ability

Does the systems {2x=5y=6 have a unique solution, no solution or many
{x=2.5y=3
solutions? What does this mean graphically?

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exam Other Question

Find the length of AB if AC has lenghth 5 1/3 and BC has length 2 1/4. It takes Deepak 50 minutes to shovel snow from his sidewalk and driveway. When he works with his brother, Kamal, it takes only 30 minutes. How long would it take Kamal by himself?