The ratio between two numbers is 12: 13. If each number is reduced by 20, the ratio becomes 2:3. Find the numbers.
options
(a) 30, 26
(b) 26, 28
(C) 24, 26
(d) 25, 27
Answers
Step-by-step explanation:
Dentin (/ˈdɛntɪn/) (American English) or dentine (/ˈdɛnˌtiːn/ or /ˌdɛnˈtiːn/) (British English) (Latin: substantia eburnea) is a calcified tissue of the body and, along with enamel, cementum, and pulp, is one of the four major components of teeth. It is usually covered by enamel on the crown and cementum on the root and surrounds the entire pulp. By volume, 45% of dentin consists of the mineral hydroxylapatite, 33% is organic material, and 22% is water.[1] Yellow in appearance, it greatly affects the color of a tooth due to the translucency of enamel. Dentin, which is less mineralized and less brittle than enamel, is necessary for the support of enamel.[2] Dentin rates approximately 3 on the Mohs scale of mineral hardness.[3] There are two main characteristics which distinguish dentin from enamel: firstly, dentin forms throughout life; secondly, dentin is sensitive.[4]
Dentin
Human tooth diagram-en.svg
Parts of a tooth, including dentin
Answer:
24 and 26
Step-by-step explanation:
24:26 is 12:13.
After deducting 20, they become 4 and 6
4:6 = 2:3