Find the greatest common divisor (also called greatest common factor) and least common multiple of 28 and 70 . \( \operatorname{gcd}(28,70)= \) \( \operatorname{lcm}(28,70)=140 \)

32 En biljett kostar 700 kr . Hur många procent har priset ökat om det nya priset beräknas \( \begin{array}{lll}\text { a) } 1,05 \cdot 700 \mathrm{kr} & \text { b) } 1,2 \cdot 700 \mathrm{kr} & \text { c) } 1,16 \cdot 700 \mathrm{kr}\end{array} \)

9. Connor cuts a board with a length of 78.5 centimeters into four equal pieces. Which is the best estimate for the lengt of each piece?

4. Una camiseta que custana R\$ 40,00 foi comprada por R\$ 34,00 . De quanto foi o desconto percentual?

Carrie wants to rewrite the improper fraction \( \frac{16}{6} \) as a mixed number with the smallest possible numerator and denominator. What mixed number is Carrie looking for? (i) \( 4 \frac{4}{3} \)

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