Question

If I spend rs 385 in one week how much do I spend in a year in a year (spending rate being the same throughout) ?

Answer 1

7days spend = 385rs
365 days spend=(385/7)×365
=20075rs

Answer 2

→ Following formulas/important things to be used in my answer ;

⇒ 1 week = 7 days

⇒ 1 month = 4 weeks

⇒ 1 year = 12 months.

Q. → ₹385 is being spent in a week, What's total amount spent in a year? (Provided, Spending is same every week) ?

→ Answering according to formulas ;

⇒ 1 week = ₹385.

⇒ 1 month = 4 weeks = 4 × ₹385 = ₹1540

⇒ 1 year = 12 months = 12 × ₹1540 = ₹18480

Therefore, In a year, {Spending remaining same throughout,} You spend  ₹18,480 (Eighteen Thousand Four Hundred Eighty Rupees only.)

The Answer we get will be approx here! Since, 1 month ≠ 4 weeks exactly. It's 4.3 weeks.

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Alternative method which gives accurate answer ;

1 week = 7 days

1 week = ₹385

∴ 7 days =  ₹385

∴ 1 day =  $\bold{\frac{Rs.\:385}{7}}$

∴ 1 day = ₹55.

1 year = 365 days or 366 days(Leap Year)

∴1 year = 365 days × ₹55 or 1 year = 366 days × ₹55(Leap Year)

∴1 year = ₹20075 or ₹20130(Leap Year)

The above result is 100$\bold{\%}$ accurate.

Thanks!