A glass held 2/5 cup of water, Carlo poured out 3/8 cup, how much is left?
(2/5)(3/8) = 6/40 = 3/20
(2/5)(3/8) = 6/40
how many glasses of water is 2/5th
To find how much water is left in the glass, we need to subtract the amount that Carlo poured out from the original amount.
Given that the glass held 2/5 cup of water and Carlo poured out 3/8 cup, we can subtract 3/8 from 2/5.
Now, in order to subtract fractions, they need to have the same denominator.
To make the denominators the same, we can find a common multiple of 5 and 8, which is 40.
To convert 2/5 to have a denominator of 40, we multiply both the numerator and denominator by 8:
2/5 = (2 * 8) / (5 * 8) = 16/40
To convert 3/8 to have a denominator of 40, we multiply both the numerator and denominator by 5:
3/8 = (3 * 5) / (8 * 5) = 15/40
Now that both fractions have the same denominator, we can subtract them:
16/40 - 15/40 = (16 - 15) / 40 = 1/40
Therefore, there is 1/40 cup of water left in the glass.