Answer: B) 375 reds
Step-by-step explanation:
Every 40 marbles 15 are red.
1000/40=25
25 x 15= 375
Answer:
the correct answer is 62
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The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try! so im pretty sure its 20
