Answer:
61
Step-by-step explanation:
let the number be x then twice the number is 2x, hence
42 + 2x = 164 ( subtract 42 from both sides of the equation )
2x = 122 ( divide both sides by 2 )
x = 61
Hence the number is 61
Answer:
3/4 in 1/5 of 60 sec
1/5*60=12
3/4 in 12 seconds
3/4*5=15/4=3 3/4
He multiplied 3/4 by 1/5 instead of by its reciprocal , 5.
12/4=3
3 mph
Gather financial details, list all sources of income, categorize expenses, list supplies, other expenses, calculate overall cost and subtract from your income, if needed tweak budget.