Thursday, 13 August 2015

HOMEWORK HELP (Alligation of Mixture)

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In what proportion must rice at $ 3.10 per kg mixed with rice at $ 3.60 per kg so that the mixture be worth $ 3.25 a kg?

C.P of 1kg cheaper rice       C.p of 1kg dearer rice
           ( 310cent)                            (360cent)

                                 Mean Price
                360-325=35                     325-310=15

By alligation rule:
Quantity of cheaper rice/Quantity of dearer rice
= 35/15 =7/3
They must be mixed in the ratio 7:3