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?
and 
is equal to the sum of 
.
and 
.
workers worked for 
hours a day for the first five days, then three more workers came and all together built the rest of the road in 
days as they worked 
hours a day. How many working hours were spent on road construction?
as a product of prime numbers.
.
.
. Round the result to the nearest two significant figures.
;
;
.
?
decimal places.
.
can be placed.
decimal places exactly by taking into account the rounded result to 
and present them on the number axis.
on the number line.
on a number line.
