Question

if a/b= (4/5)^20 ÷ (4/5)^18 find the value of +a/b)^2


for exam
give answer with explanation
​

Answer 1

Answer:

To find a : b : c, b is made same in both the ratios. L.C.M of 4 and 5 is 20

a:b=  

4

3

​  

=  

4×5

3×5

​  

=  

20

15

​  

 

b:c=  

9

5

​  

=  

9×4

5×4

​  

=  

36

20

​  

 

∴   a:b:c=15:20:36

Step-by-step explanation: