Question 12
Find the missing number in the box in each of the proportions:
□18=29
We have, ?18=29⇒?18=2×29×2 [Multiplying numerator and denominator by 2 to make denominator of both the ratios same] ⇒ ?18=418 On comparing, we get, ? = 4
Question 11
35=□20
Question 13
8□=3.24
Question 15
1636=□63=36□=□117