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In a mixture of 28 litres, the ratio of milk and water is 5:2.Set up an equation between mixture and milk,draw its graph.By reading the graph , find the quantity of milk in the mixture ?

Asked by Vikas 27th January 2016, 2:13 PM
Answered by Expert
Answer:

 

begin mathsize 11px style Let space the space quantity space of space milk space be space 5 straight X space and space of space water space be space 2 straight X Then space the space quantity space of space mixture space equals space 7 straight X equals 5 straight X open parentheses 7 over 5 close parentheses equals quantity space of space milk cross times 7 over 5 Let space the space quantity space of space mixture space be space apostrophe straight Q apostrophe space and space the space quantity space of space milk space be space apostrophe straight M apostrophe Hence comma space straight Q equals 7 over 5 straight M It apostrophe straight s space straight a space linear space relation. space So space the space graph space is space straight a space straight space line space passing space through space origin space with space slope space 7 over 5. In space the space particular space case space when space mixture space quantity space is space 28 space straight L comma space milk space amount space can space be space found space as space follows colon therefore 7 straight X equals 28 straight L rightwards double arrow straight X equals 4 straight L 5 straight X equals 20 straight L equals quantity space of space milk space in space the space mixture. end style

Answered by Expert 27th January 2016, 6:24 PM
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