Leviticus 27:5

5And if the person is from five to twenty years of age, then your valuation for the male shall be twenty shekels,27:5 20 shekels is approximately 8 ounces or 228 grams of silver. and for the female ten shekels.27:5 10 shekels is approximately 4 ounces or 114 grams of silver; also in verse 7.