if your asking X+50+300=354 the answer is 4
add 2 known numbers together
x+350=354
subtract the 350 from both sides
x=4
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If you mean 300 plus a 10 percent increase of itself, 330.
ok so 2+3 equals 5.but 200+300 equals 500.
To convert hundreds to tens, you multiply the number of hundreds by 10. Therefore, 300 hundreds is equal to 300 × 10, which equals 3,000 tens.
To find 300 percent of a number, multiply the number by 3. In this instance, 3 x 10 = 30. Therefore, 300 percent of 10 is equal to 30.
300 + 64 = 364