Answer:
12 students play chess
and 25 students play Sudoku
Step-by-step explanation:
There are 30 students in Ms Barclay's classroom.
2/5 students play chess.
i.e.
play chess
i.e. 12 students play chess
5/6 of the students play Sudoku.
i.e.
play Sudoku
i.e. 25 students play Sudoku
Hence, 12 students play chess
and 25 students play Sudoku
You solve for a variable in an equation by taking the variable to one side of the equation and other terms to the other side of the equation using arithmetic properties.
Answer:
186 pounds
Step-by-step explanation:
let x = pounds on Earth
set up a proportion:
= 
cross-multiply: 21x = 3906
divide by 21: x = 186
Answer:
4 cm
Step-by-step explanation:
If 6 inches = 1 cm, and 24 inches divided 6 inches = 4, then it would be 4 cm.