Asked by Tasene

How to solve this problem 8.3 was added to a certain number. This sum was then divided by 11.2. Finally, the quotient was multiplied by 8. This product came out to 16. Please help I'm in 5th gradethank you..

Answers

Answered by Bosnian
[ ( 8.3 + x ) / 11.2 ] * 8 ) = 16 Divide both sides by 8

[ ( 8.3 + x ) / 11.2 ] * 8 ) / 8 = 16 / 8

( 8.3 + x ) / 11.2 = 2 Multiply both sides by 11.2

11.2 * ( 8.3 + x ) / 11.2 = 2 * 11.2

8.3 + x = 22.4 Subtract 8.3 to both sides

8.3 + x - 8.3 = 22.4 - 8.3

x = 14.1
Answered by Shredder
[(8.3 + x) / 11.2] * 8 = 16
Multiply both sides by 11.2
8(8.3 + x) = 179.2
66.4 + 8x = 179.2
collect like terms
8x = 179.2 - 66.4
8x = 112.8
Divide both sides by 8
X = 14.1
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