Meiling has 1 1/4 liter of orange juice. she drinks 1/3 liter. how much orange juice does she have left?
(extension: if her brother then drinks twice as much as meiling, how much is left? )

remaining juice left when she drink = liter

remaining juice left when her brother drink = liter

Step-by-step explanation:

given data

orange juice = liter

she drink = liter

to find out

How much orange juice does she have left and If her brother then drinks twice as much as Meiling, how much is left

solution

we know total juice is liter and

she drink liter

so remaining juice left is = total orange juice - she drink    ..............1

remaining juice left is = -

remaining juice left is = liter

and

if her brother drink twice so he drink = 2 × she drink

her brother drink = 2 × liter

her brother drink = liter

so

so remaining juice left is = total orange juice - her brother drink

so remaining juice left is =   -

remaining juice left is = liter