Question

Find a number which when multiplied by 8 is increased by 91.

Answer 1

Answer:

13

Step-by-step explanation:

Let number = x  

7x = x + 78  

6x = 78  

x = 13

Answer 2

Let the number be x

A number when multiplied by 8 becomes 8 × x = 8x

a number which when multiplied by 8 is increased by 91 = 8x = x + 91


According to the question,

8x = x + 91

➾ 8x - x = 91

➾ 7x = 91

➾ x = 13


∴ The number is $\green{\boxed{\green{\boxed{\red{\textsf{13}}}}}}$


Let's check the solution,

8x = x + 91

By putting the value of x

➾ 8 × 13 = 13 + 91

➾ 104 = 104

∴ LHS = RHS ✔✔


Hence, the number is 13