Each have six in them because six times three equals eighteen and twenty minus two equals eighteen.hope this helps
        
             
        
        
        
Answer:
4
Step-by-step explanation:
The first triangle has the ratios 10:6:8. The next one has the ratios 5:3:x. If you have paid close attention, you can divide the first one by 2 to get the second one. 8/2 is 4 so the correct answer is 4.
Hope this helps plz mark brainliest if correct :D
 
        
             
        
        
        
Let x be the age of ishaan so the age of ben will be 12+x. the equation will become x=x+12 
Going 3 years back, the age of ishaan was x-3 so that of ben would be x+12-3 before 3 years. at that time the age of ben was 4 times the age of ishaan. it means x+12-3(the age of ben)=4(x-3(the age of ishaan))
solving this equation, we get the answer x=7. this is the age of ishaan in the present.