Question

0.9/0.5 = a/10 Plz help

Answer 1

Answer:

a = 18

Step-by-step explanation:

Step 1: Cross-multiply.

• $0.5 * a = 10*0.9$
• $0.5a =9$  

Step 2: Divide both sides by 0.5

• $\frac{0.5a}{0.5} =\frac{9}{0.5}$
• $a = \frac{90}{5}$
• $a = 18$

Step 3: Check if solution is correct.

• $\frac{0.9}{0.5}=\frac{18}{10}$
• $\frac{9}{5} =\frac{18}{10}$  
• $\frac{18/2}{10/2} =\frac{9}{5}$
• $\frac{9}{5} =\frac{9}{5}$

Therefore, a = 18.

Answer 2

Answer:

18

Step-by-step explanation:

10/0.5 = 20

20 * 0.9 = 18