alleryଯଦି a : b = 3 : 4 ଏବଂ b : c = 5 : 7, ତେବେ a : c ହେଉଛି |
A3 : 7
B15 : 28
C12 : 35
D21 : 20
Answer & Solution
Correct answer: B. 15 : 28
** ସାଧାରଣ b: ** a : b = 15 : 20 (5 ଦ୍ୱାରା ଗୁଣ କରନ୍ତୁ)
b : c = 20 : 28 (4 ଦ୍ୱାରା ଗୁଣିତ) |
** ତେଣୁ a: ** c = 15 : 28 |
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