3251 + 587 + 369 -? = 3007
538 x? = 3497
38.5 ÷ 5.5 x 12 - 4 =?
In a certain code DENIAL is written as MDCMBJ. How is SOURCE written in that code?
367.85 ÷ 22.95 × 14.93 =?
75%of a number is equal to four-fifth of another number. What is the ratio between first numberand the second number?