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Mathematics 21 Online
OpenStudy (nerdsarecool):

Hans finished his chemistry assignment in 2/5 hours. Then he completed his history assignment in 1/2 hours. How much more time did Hans spend on his history assignment? Write your answer as a fraction in simplest form.

OpenStudy (nerdsarecool):

@Lovelarap

OpenStudy (anonymous):

ok, LCD

OpenStudy (nerdsarecool):

Pls help me

OpenStudy (anonymous):

first find the least common denominator

OpenStudy (nerdsarecool):

Ok

OpenStudy (nerdsarecool):

10

OpenStudy (anonymous):

good, now change the top

OpenStudy (nerdsarecool):

Ok

OpenStudy (nerdsarecool):

5/10 2/10

OpenStudy (nerdsarecool):

What do i do subtract or add

OpenStudy (anonymous):

subtract

OpenStudy (nerdsarecool):

Ok thx

OpenStudy (anonymous):

you have to subtract cause they asked how much more time did Hans spend on his history assignment.

OpenStudy (nerdsarecool):

3/10

OpenStudy (anonymous):

yes!

OpenStudy (nerdsarecool):

Thx

OpenStudy (anonymous):

yw

OpenStudy (nerdsarecool):

Wait

OpenStudy (nerdsarecool):

t was wrong

OpenStudy (anonymous):

wait......

OpenStudy (nerdsarecool):

Oh that is the answer

OpenStudy (anonymous):

no,

OpenStudy (nerdsarecool):

What is the answer then

OpenStudy (anonymous):

sorry, just woke up. it's 1/10. i am very sure it

OpenStudy (nerdsarecool):

Ok thx

OpenStudy (nerdsarecool):

yup

OpenStudy (anonymous):

yay

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