If 4/5 of comcrete covers 5/6 of a bridge, how many tons if concrete is required to cover the entire bridge

Write and solve an equation of proportions:

Step-by-step explanation:

4/5 ton 5/6 bridge

=

x 1 bridge

Then (4/5) * (1 bridge) = (5/6 bridge)x.

Solve this for x by mult. both sides of the equation by 6/5:

(6/5)(4/5) = x

24/25 tons of concrete are needed to complete the entire bridge.

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think the answer is 30 degrees. if not than it is 20 degrees. not 100% sure. let me know if it was right.

gill russ