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April 18, 2015

Posted by **Evelyn** on Thursday, December 9, 2010 at 8:37pm.

Please help me

- math -
**Reiny**, Thursday, December 9, 2010 at 9:31pmat start:

Henry ---- x marbles

Andy ---- .8x marbles

after give-away:

Henry --- x+80

Andy ---- .8x - 80

Andy's marbles = 1/2 of Henry's marbles

.8x-80 = (1/2)(x+80)

times 2

1.6x - 160 = x+80

.6x = 240

x = 400

So Henry had 400 and Andy had 320

check: after give-away

Andy is left with 240

Henry now has 480

Does Andy have half of what Henry has?? YES

- math -
**Ariana Grande**, Monday, May 26, 2014 at 8:47amat start:

Henry ---- x marbles

Andy ---- .8x marbles

after give-away:

Henry --- x+80

Andy ---- .8x - 80

Andy's marbles = 1/2 of Henry's marbles

.8x-80 = (1/2)(x+80)

times 2

1.6x - 160 = x+80

.6x = 240

x = 400

So Henry had 400 and Andy had 320

check: after give-away

Andy is left with 240

Henry now has 480

Does Andy have half of what Henry has?? YES

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