10. Ric can do a job in 4 days by himself. Ali can do the same job in 6 days. How long vost it take them if they work together?

A. 2.4 days
B. 2.5 days
C.2.6 days
D.2.7 days

11. it is a mathematical statement that shows two expressions are equal.

A equation
B. Inequality
C. Phrase
D. Sentence

12. It is an expression which is either larger or smaller than another expression

A. equation
B. inequality
C. Phrase
D. Sentence

13. It is an expression built up from integer, constants, variables and the algebraic operations.

A algebraic expression
B. equation
C. Inequality
D. Phrase

sino po makaka sagot ng maayos gagawin kopong brainliest 1heart 5stars​