The Morris family and the Thompson family each used their sprinklers last summer. The water output rate for the Morris family's sprinkler was 15 L per hour. The water output rate for the Thompson family's sprinkler was 35 L per hour. The families used their sprinklers for a combined total of 55 hours, resulting in a total water output of 1225 L . How long was each sprinkler used?

Ihave a 69 and an 82. the 69 is worth 40% of my grade and the 82 is worth 15%. can someone tell me my current average grade.

Yuto and hila attempted to solve the same inequality. their work is shown below. which statement is true about the work shown above? yuto is correct because he isolated the variable correctly and reversed the inequality symbol. yuto is incorrect because he should not have reversed the inequality symbol. hila is correct because she isolated the variable correctly and reversed the inequality symbol. hila is incorrect because she should not have reversed the inequality symbol.

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76