Grace has 3 1/2 cups of yogurt to make smoothies. Each smoothies uses 2/5 cup of yogurt. What is the maximum number of smoothies that Grace can make with the yogurt?

Let’s convert the yogurt first,
3 1/2 cups of yogurt covert it 3x2=6 therefore is 7/2, then covert into factor of 5. 7/2 x 5/5 = 35/10 yogurt
Each smoothies cost 2/5 cup of yogurt, covert it to factor of 10. 2/5 x 2/2 = 4/10. There for use 35/4 = 8 and remainder is 3.
So the solution is 8 yogurt

On monday,mrs.wise bought 3 lbs of apples at $4per lb= 4*3=$12on tuesday ,20%off and she buy 5 lbs of apples = $4-20%=3.20*5lb=$16example: other wise when she buy 5lbs on monday she have to spend 4*5=20