On Monday, it rained 1 1/4114 inches. On Tuesday, it rained 3/535 inch. How much more did it rain on Monday than on Tuesday?

2 Answers
Jul 27, 2016

It rained 13/201320 inches more on Monday than it did on Tuesday.

Explanation:

To make this easier, let's give a common denominator to each of the fractions:

5/4=25/2054=2520
3/5=12/2035=1220

Next, just subtract:

25/20-12/20=13/2025201220=1320

Jul 27, 2016

13/20" inches more of rain on Monday"1320 inches more of rain on Monday

Explanation:

1 1/4 " is the same as "1+1/4" is the same as "4/4+1/4=5/4114 is the same as 1+14 is the same as 44+14=54

So we have:"Monday's rain - Tuesday's rain" ->" "color(brown)(5/4-3/5)Monday's rain - Tuesday's rain 5435

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Change these so that they have the same denominator (bottom number) of 20

color(brown)("Multiply by 1 and you do not change the value")Multiply by 1 and you do not change the value
color(brown)("but you can change the way it looks")but you can change the way it looks

color(blue)(5/5=1 and 4/4=1)55=1and44=1

color(brown)((5/4color(blue)(xx5/5))-(3/5color(blue)(xx4/4)))color(green)(" " ->" " 25/20-12/20 )color(purple)(" "=" "(25-12)/20)(54×55)(35×44) 25201220 = 251220

" "color(red)(=13/20) =1320