? % of 400 + 40% of 160 = 17% of 400

– by
? % of 400 + 40% of 160 = 17% of 400

A. 4
B. 0.1
C. 1
D. 0.4
Explanation:
? % of 400 + 40% of 160 = 17% of 400
?/100 of 400 + 40/100 of 160 = 17/100 of 400
?(4) + 64 = 68 => ? = 1