5. Mustafa intends to save RM18,000 into their three children's account; Hanif, Syukri and Khairil; in the ratio \( 3: 4: x \). If Hanif gets RM6,000, find a. the total amount received by Khairil. b. the value of \( x \). (3 marks)

\( 25+|(-9)-(-7)||| \)

A nurse is preparing to administer tobramycin \( 4 \mathrm{mg} / \mathrm{kg} / \) day IM divided in three equal doses to a client who weighs 60 kg . Available is tobramycin \( 40 \mathrm{mg} / \mathrm{mL} \). How many mL should the nurse administer per dose? (Round the answer to the whole number. Use a leading zero if it applies. Do not use a trailing zero.)

8. Juan debe 160 € en la charcutería. Cuatro de sus amistades quieren ayudarlo, dándole 20 euros cada uno. ¿Qué deuda tiene Juan ahora?

(t) \( \frac{7}{8}-\frac{3}{4}+\frac{5}{16} \)

c) \( [(+9)-(-11)] \cdot(-4) \) d) \( -(-1)-(-9) \cdot[(-7)-(+11)] \)