Question

12 is 90% of what number? with steps

Answer 1

Answer:

Let's understand the concept:-

• Here 12 is 90% of a number.
• So we can say that 90% of That number is 12 .
• In this way we can get the the number

Solution:-

Let,

the number=x

According to the question ,

${:}\longrightarrow$$\sf 90\% \:of \;x=12$

• We know 90%=90/100
• so add it

${:}\longrightarrow$$\sf {\dfrac {90}{100}}\times x=12$

${:}\longrightarrow$$\sf {\dfrac {90x}{100}}=12$

• Now use cross multiplication method

${:}\longrightarrow$$\sf 90x=12\times 100$

${:}\longrightarrow$$\sf 90x=1200$

• Now interchange sides .

${:}\longrightarrow$$\sf x={\dfrac {1200}{90}}$

${:}\longrightarrow$$\sf x={\dfrac {200}{15}}$

• Answer will come in decimals so we take approximate value.

${:}\longrightarrow$$\sf x=13.3$

${:}\longrightarrow$$\sf x=approximately \:13$

$\therefore$The number is 13.