If a : b = 2 : 3 and c : d = 5a : 3b, then 2c : 5d is equal to:
Answer & explanation
Correct answer: option 3
A : B = 2 : 3
⇒ C : D = 5a : 3b = 5(2) : 3(3) = 10 : 9
⇒ 2c : 5d = 2(10) : 5(9) = 20 : 45 = 4 : 9
If a : b = 2 : 3 and c : d = 5a : 3b, then 2c : 5d is equal to:
Correct answer: option 3
A : B = 2 : 3
⇒ C : D = 5a : 3b = 5(2) : 3(3) = 10 : 9
⇒ 2c : 5d = 2(10) : 5(9) = 20 : 45 = 4 : 9