Quote by: firebird529Quote by: SnuffyI couldn't work this problem out or understand given soln.. could someone help please.

*Aro and Buso are aliens on planet Coco. There are a total of 100 Aros and Busos. Aro has 3 legs and Buso has 7 legs. They have a total of 460 legs. How many of each type of alien are there on planet Coco?*

The answer is 'There are 40 Busos and 60 Aros'.

Thanks

Assume all are Aros, the total number of legs would be 100 x 3 = 300

There is a difference of 460 - 300 = 160 in the total number of legs.

7 - 3 = 4 (difference in legs between a Aro and a Buso)

160 / 4 = 40

There are 40 Busos.

100 - 40 - 60

There are 60 Aros.