What number must be added to each term of the ratio 15:21 to make a ratio 3:4 ?
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Answer:
3 should be added.
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Answer:
X= -5/3
Step-by-step explanation:
let the ratio be X
15+X/21+X = 3+X/4+X
60+15x+4x+x² = 63+21x+3x+x²
60+19x = 63+24x
19x-24x = -60+63
-5x = 3
X= -5/3
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