Question

Can someone help me anyone please Giselle works as a carpenter and as a blacksmith.She earns \$20$20dollar sign, 20 per hour as a carpenter and \$25$25dollar sign, 25 per hour as a blacksmith. Last week, Giselle worked both jobs for a total of 303030 hours, and earned a total of \$690$690dollar sign, 690.How long did Giselle work as a carpenter last week, and how long did she work as a blacksmith?Giselle worked as a carpenter for 
 hours and as a blacksmith for
 hours last week.

Answer 1

Let she work for x hours as carpenter !
so earned money = 20x

and for blacksmith she must work for 30-x hours


so earned money = (30-x) ×25

so putting in eqn;

20x+25(30-x) = 690
so, x= 60/5 = 12

so she works for carpenter for 12 hrs and 30-12= 18 hrs for blacksmith !!.....answer !!