One-quarter 58883

The workers dug one-quarter of the excavation on the first day, half the rest on the second day, and the remaining 15 m on the third day. How many meters did they dig on the first and second day?

Correct answer:

a =  10 m
b =  15 m

Step-by-step explanation:

c=15 m a+b+c = x  x/4+(xx/4)/2+c=x x/4+(xx/4)/2+15=x  1.5x=60  x=1.560=40  x=40  a=x/4=40/4=10 m
b=xac=401015=15=15 m   Verifying Solution:  b2=(xx/4)/2=(4040/4)/2=15 m

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