If 2q35 = 778, find q
-
A.
2 -
B.
1 -
C.
4 -
D.
O
Correct Answer: Option A
Explanation
2q35 = 778
2 x 52 + q x 51 + 3 x 50 = 7 x 81 + 7 x 80
2 x 25 + q x 5 + 3 x 1 = 7 x 8 + 7 x 1
50 + 5q + 3 = 56 + 7
5q = 63 – 53
q = (frac{10}{5})
q = 2
2q35 = 778
2 x 52 + q x 51 + 3 x 50 = 7 x 81 + 7 x 80
2 x 25 + q x 5 + 3 x 1 = 7 x 8 + 7 x 1
50 + 5q + 3 = 56 + 7
5q = 63 – 53
q = (frac{10}{5})
q = 2