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108?
4:00 + 28 would equal 4:28 so twenty eight minutes after four is four twenty eight
One-seventh of twenty eight is four.
4
4/7
Twenty eight = 28
4/3 or 1 and 1/3
28*3/4 = 21
1, 2 and 4.
4 and 7.
1/4
7 x 4
(28 ÷ 4) × 3 = 21