Answer the worksheet ... - tlooto, The Most Powerful AcademicGPT

--- Worksheet 6 Q.1 Let correct = $+5$, incorrect = $-2$, not attempted = $0$. (a) Mohan: Score = $4 \times 5 + 6 \times (-2) = 20 - 12 = \boxed{8}$ (b) Reshma: Score = $5 \times 5 + 5 \times (-2) = 25 - 10 = \boxed{15}$ (c) Heena: Score = $2 \times 5 + 5 \times (-2) = 10 - 10 = \boxed{0}$ --- Q.2 Profit on white cement = ₹8/bag; Loss on grey cement = ₹5/bag. (a) $3000 \times 8 - 5000 \times 5 = 24000 - 25000 = -1000$. Loss = ₹1000. (b) If $x$ is white, $6400$ is grey, let profit/loss $= 0$: \[ 8x - 5 \times 6400 = 0 \implies 8x = 32000 \implies x = 4000 \] White cement bags must be 4000. --- Q.3 (a) $-3 \times \underline{\phantom{M}} = 27$ ⇒ $\underline{\phantom{M}} = -9$ (b) $5 \times \underline{\phantom{M}} = 35$ ⇒ $\underline{\phantom{M}} = 7$ (c) $-8 \times \underline{\phantom{M}} = 56 $ ⇒ $\underline{\phantom{M}} = -7$ (d) $\underline{\phantom{M}} \times -12 = 132$ ⇒ $\underline{\phantom{M}} = -11$ --- Q.4 (a) $-30 + 10 = -20$ (b) $50 + (-5) = 45$ (c) $-36 + (-9) = -45$ (d) $-49