Question

Product of 2 numbers is 27/14. If one of them is 15/7. Find the other number.​

Answer 1

$\overline{\underline{\boxed{\sf GIVEN \darr}}}$

Product of 2 numbers is 27/14. If one of them is 15/7. Find the other number.

$\overline{\underline{\boxed{\sf HOW \: TO \: DO \darr}}}$

Step 1 : Take any variable in place of the number we need to find.

Step 2 : Multiply the number with the variable and keep the result on the left hand side

Step 3 : Cross multiply and get the answer

$\overline{\underline{\boxed{\sf SOLUTION \darr}}}$

Let the unknown entity be x

So it is given that 15/7 multiplied by x to get 27/14

So the equation is

• 15/7 × x = 27/14

• 15x/7 = 27/14

By cross multiplying we get

• 15x × 14 = 27 × 7

• 210x = 189

Transposing 210 on the right hand side we get

• x = 189/210

• x = 63/70

Hence, the other number is 63/70

Answer 2

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