Instructions
What will come in place of the question mark (?) in the given questions ?
Solution
Expression : $$(\frac{42.25}{0.5}+\frac{16.2}{0.2})\times?=1986$$
=> $$(84.5 + 81) \times x = 1986$$
=> $$165.5 \times x = 1986$$
=> $$x = \frac{1986}{165.5} = 12$$
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