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15 February, 15:18

Finnegan needs average of 70 on four tests in science to make the honour roll. What is the lowest score he can receive on the fourth test if his first three scores are 65, 60, and 92?

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  1. 15 February, 16:36
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    1. Finnegan needs to get the average of 70 in 4 tests in science to be able to make it to honour roll.

    Find the lowest score he received on the fourth test if his first tests are 65, 60 and 92.

    let x be the missing number

    => 65 + 60 + 92 + x / 4 = 70

    => 217 + x / 4 = 70

    => 217 + x = 4 x 70

    => 217 + x = 280

    => x = 280 - 217

    => x = 63

    Thus the lowest score he get is 63.
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