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3 years ago

What is the estimated mean28-day strength of this concrete if the 7-day strength is 3000psi?

Mathematics

1 answer:

LUCKY_DIMON [66]3 years ago

6 0

Answer:

12,000psi

Step-by-step explanation:

Given the 7 days strength of a concrete to be 3000psi, to calculate the estimated mean28-day strength of this concrete the following equality equation is applied

7 days strength = 3000psi

28days strength = y

To get y, we will Cross multiply

7 × y = 28×3000

7y = 28×3000

7y = 84000

Divide both sides by 7

7y/7 = 84000/7

y = 12000

hence the estimated mean 28-day strength of this concrete is 12,000psi

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What is the estimated mean​28-day strength of this concrete if the​ 7-day strength is 3000​psi?

What is the estimated mean28-day strength of this concrete if the 7-day strength is 3000psi?