If 2x+7 =12, then what is 4x-7?

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Job Solution Bangladesh Development Bank Ltd Bangladesh Shilpa Bank Ltd - Officer - 2004 গণিত
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A truck driver must complete a 180-mile trip in 4 hours. If he averages 50 miles an hour for the first three hours of his trip, how fast must he travel in the final hour?

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15 students took a test that was scored from 0 to 100. If exactly 10 students scored 75 of more on the test, find the lowest possible value for the average of the scores of all 15 students.

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A groccer buy some eggs at tk. 3 each. He find 12 of them are broken, but he sells other at tk.4 each and makes profit of tk.96.How many eggs did he buy?

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