 
<translate> Kuɗin aji na Karen ya ƙunshi kuɗaɗe na dala 10 da 20 ne kawai, wanda ya kai dala 120. Adadin takardun kudi na $ 10 ya ninka adadin takardun kudi na $ 20. Da yawa takardun $ 20 suke da su a cikin asusun su? Amsar ita ce 3. <eng> Karen's class fund contains only $10 and $20 bills, which amount to $120. The number of $10 bills is twice as many $20 bills. How many $20 bills do they have in their fund?
The answer is 3 