exam Maths Puzzle Numerical Ability

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?

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exam Other Question

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

its a diagram so i cant type it

i dont understand how to do the problem

please and thank you so much

i appreciate it