Answer: $840
Step-by-step explanation:
- Set up the proportion 210/10 = x/40.
- To solve it quickly, multiply 210 with 4, since 10*4 = 40. Therefore, x = 840.
Answer:
The length of the shorter piece is
.
The length of the longer piece is
.
Step-by-step explanation:
The five-step method is GUESS method.
Given:
Length of steel beam, 
Length of longer piece is 1 foot longer than twice the shorter one.
Unknown:
Length of longer and shorter pieces of beam.
Let the length of shorter piece be
feet.
Therefore, the length of longer beam is equal to 
Evaluate:
Sum of lengths of longer and shorter pieces of beam is equal to the total length of beam. So,

Substitute and Solve:
Now, we have,
.
Substitute 5 for
for the lengths of shorter and longer pieces and solve for each. This gives,
Length of shorter piece = 
Length of longer piece = 
Therefore, the lengths of shorter and longer pieces are
and
respectively.
Answer:
200200000222
Step-by-step explanation:
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