exam
Maths Puzzle
Numerical Ability
if a ceramic tiles are 203mm*203 mm, how many tiles would it take to cover an area 1 meters*2 meters?
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exam Other Question
x+y+z=-3
2x+5y+2z=-12
-x+9y-3z=-11
Debbie traveled by boat 4 miles upstream to fish in her favorite spot. Because of the 5-mph current, it took her 40 minutes longer to get there than to return. How fast will her boat go in still water? (Round the answer to one decimal place.)