Practicing Success
Practicing Success
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If (5a – 3b) : (4a – 2b) = 2 : 3, then a : b is equal to |
3 : 4 7 : 5 2 : 3 5 : 7 |
5 : 7 |
⇒ \(\frac{5a - 3b}{4a - 2b}\) = \(\frac{2}{3}\) ⇒ 15a - 9b = 8a - 4b ⇒ 7a = 5b ⇒ \(\frac{a}{b}\) = \(\frac{5}{7}\) or a:b = 5:7 |
