Answer:
t = 0.22
Explanation:
to evaluate for the value of t from the expression 15/8 + 1/5t = 3 , we would simply look for how to express t as the subject of formulae.
solution
15/8 + 1/5t = 3
15/8 - 3 = 1/5t
3( 15) - 8(3)/24 = 1/5t
45 - 24/24 = 1/5t
21/24 = 1/5t
cross multiply
21 x 5t = 24 x 1
105t = 24
divide both sides by 105
105t/105 = 24/105
t =45/8
Multiply each side by 40 to get rid of the fractions
40(15/8 + 1/5t )= 3*40
Distribute
75 +8t = 120
Subtract 75 from each side
75-75 +8t = 120-75
8t = 45
Divide each side by 8
8t/8 = 45/8
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