The task is to generate the correct answer for a given math problem.

[EX Q]: Problem: how many quarters are equal to 7 dollars ?
[EX A]: 28

[EX Q]: Problem: points a , b , and , c have xy - coordinates ( 2,0 ) , ( 8,12 ) , and ( 14,0 ) , respectively . points x , y , and z have xy - coordinates ( 6,0 ) , ( 8,4 ) , and ( 10,0 ) , respectively . what fraction q of the area of triangle abc is the area of triangle xyz ?
[EX A]: 1 / 9

[EX Q]: Problem: what ratio must a shopkeepermix peas and soybean of rs . 16 and rs . 25 / kg , as to obtain a mixture of rs . 19.50 ?
[EX A]:
11 : 7