4 grade
posted by nena .
Mario got his $10.00 weekly allowance on Monday. He spent 25% of his weekly allowance on Tuesday, 15% of his weekly allowance on Wednesday, and 10% more on Thursday. How much money did he have left to spend for the rest of the week?

He spent 25% + 15% + 10% = 50% of his allowance during the week so he has 100%50% remaining.
#10.00 x 0.50 = ?? OR another way.
He spent 50% and that is $10.00 x 0.50 = $5.00 spent which leaves $10.00$5.00 = $5.00 left. OR a longer way,
$10.00  0.25*10 = 10.00  2.50 leaving 7.50.
Then 7.50  0.15*10.00 = 7.50  1.50 = 6.00
Then 6.00  0.10*10.00 = 6.00  1.00 = $5.00
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