Answered

Makakuha ng kaugnay na sagot sa lahat ng iyong katanungan sa IDNStudy.com. Magtanong at makakuha ng detalyadong sagot mula sa aming komunidad ng mga eksperto na may kaalaman.

Nine out of 12 pupils who study their lessons get high score grades. If 120 pupils study their lessons, how many will get low grades?

Sagot :

Michael08idn
in solution
12 pupils is multiplied by 10 so 12X10=120
let the pupils who will get low grades as number x so
if there are 9 students got high grades its a simple equation, 9+X=12 then using the subtraction property of equality you can 9-9+x=12-9 to eliminate 9 from x so now you have x=3, since we multiplied 12 to 10 to get 120 so x=3(10) and the answer is 30. :)
the answer of this question is 30