Question

Can someone help me with this: Eighty, decreased by three times an number, is the same as five times the number, increased by eight. Find the number? I'll mark you as brainless.

Answer 1

Eighty, decreased by three times an number, is the same as five times the number, increased by eight. Then the number is 9

Solution:

Given that eighty, decreased by three times an number, is the same as five times the number, increased by eight

To find: the number

Let the required number be "a"

Let us break the given sentence

Eighty decreased by three times an number = five times the number increased by eight

Here "times" represents multiplication and "decreased" represents subtraction and "increased represents "addition"

80 - three times "a" = 5 times "a" + 8

80 - 3a = 5a + 8

80 - 8 = 5a + 3a

8a = 72

a = 9

Thus the required number is 9