Question

A man earns Rs 5600 in one week. How much will he earn in 15 days ?​

Answer 1

The Long Way:

How much is being earned per day (x)

Multiply that value by the number of days (y)

x=25007

x=357.14

total=x∗y

total=357.14∗4

total=1428.56

The Short Way:

Multiply the week value by the days/week fraction.

total=2500∗(47)

total=1428.57

Yes, both answers are different a very small decimal value. This is due to the rounding off of x to “.14” as compared to whatever it was before in the longer (though only by 1 step) method.

Answer 2

Answer:

1 week = 7 days

7 days = Rs. 5600

1 day = Rs. 5600 ÷ 7

= Rs. 800

So if 1 day = Rs. 800

Then 15 days = Rs. 800 × 15

= Rs.12,000

Hence, the amount the man earns in 15 days is Rs.12,000

This is sum is done by Unitary Method.