Question

it took 15 days for 30 labourers to dig a pond . lets workout using rule of three in how many days 25 labourers could have complete the said work.​

Answer 1

Step-by-step explanation:

quickly browsed some of the answers and didn’t find the simplest solution so I shall give it. The simplest solution would be to treat this as a problem of similar triangles. So we set up the problem as follows:

N/3o days= 15 workers/8 workers

Then we just solve for N:

N = 30 days x 15 workers/8 workers = 56.25 days????

I believe this to be the correct course of action but my calculator keeps giving me 56.25 days which cannot be right because almost doubling the number of workers should be theoretically be capable of completing the task in about half the time or about 7 or 8 days. This is a little embarrassing because I am an engineer schooled in higher calculus so I should know how to set this up. What am I doing wrong?