 
<translate> Tambaya. Idan kashi 85 cikin 100 na waɗanda suke yin gwajin GMAT da aka rubuta da takarda da fensir suka amsa tambaya ta farko daidai a wani sashen lissafi, kuma kashi 70 cikin 100 na waɗanda suke yin gwajin suka amsa tambaya ta biyu daidai, kuma kashi 5 cikin 100 na waɗanda suke yin gwajin ba su amsa ko ɗaya cikin tambayoyin daidai ba, kashi nawa ne suka amsa duka biyun daidai? Zaɓuɓɓuka: (A) 60 cikin dari (B) 65 cikin dari (C) Kashi 70% (D) Kashi 75% (E) kashi 80 cikin dari Amsa wannan. (A) Ƙungiyar Wane bayani ne ya nuna cewa hakan gaskiya ne? <eng> Question. If 85 percent of the test takers taking an old paper and pencil GMAT exam answered the first question on a given math section correctly, and 70 percent of the test takers answered the second question correctly, and 5 percent of the test takers answered neither question correctly, what percent answered both correctly?
Options:
(A) 60 %
(B) 65 %
(C) 70%
(D) 75%
(E) 80%
Answer. (A)
What step-by-step reasoning justifies that answer? 