20 because you multiply 4 and 5 and get 20
Answer:
30
Step-by-step explanation:
16 days is 16/80 = 1/5 the time for 6 builders, so the number of builders required is 1/(1/5) = 5 times that:
5 × 6 builders = 30 builders
The answer for your question is 45 cm long
If it is 5+2x=2x+6 than the answer is no solution
