153k views
2 votes
123b is 0.4 of what number

1 Answer

2 votes
'of' means multiply
what number=x
123b is 0.4 of what
123b=0.4 times x
divide both sides by 0.4
307.5b=x

the number is 307.5n
User Michalmuskala
by
8.8k points