if x + 74% of x = 80 then:
100% of x + 74% of x = 174% of x = 80
→ x = 80 ÷ 174% = 80 ÷ 174/100 = 45 85/87 ≈ 45.977
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To increase a number by 4 percent, multiply the number by 1.04. In this instance, 1100 x 1.04 = 1144Therefore, 1100 increased by 4 percent is equal to 1144.
Answer:We need to find a number which increased by 3.5 of itself equals 621.Let that number be x.x increased by 3.5 of itself equals 621 implies x+ 3.5x = 621.x(1+3.5) = 621x(4.5) = 621x = 621/4.5x = 138Therefore the required number is 138.Source: www.icoachmath.com
let X = number X + 1/2 X = 21 1.5 X = 21 X = 14
Yes. Every number is equal to itself (and to no other number).