This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
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Here are the solutions to the questions: 15. There are 132 learners in a class. If (2)/(3) of the learners are girls, how many boys are in the class? Step 1: Find the fraction of boys in the class. If (2)/(3) of the learners are girls, then the remaining fraction are boys. Fraction of boys = 1 - (2)/(3) = (3)/(3) - (2)/(3) = (1)/(3) Step 2: Calculate the number of boys. Multiply the total number of learners by the fraction of boys. Number of boys = (1)/(3) × 132 Number of boys = (132)/(3) Number of boys = 44 The correct option is D. D. 44 16. In a school, 40% of the learners like French. If there are 120 learners in the school, find the number of learners who like French. Step 1: Convert the percentage to a decimal or fraction. 40\% = (40)/(100) = 0.4 Step 2: Calculate the number of learners who like French. Multiply the total number of learners by the percentage who like French. Number of learners who like French = 0.4 × 120 Number of learners who like French = 48 The correct option is C. C. 48 17. If 50kg of rice cost 500 cedis. What is the cost per kilogram of rice? Step 1: Divide the total cost by the total quantity to find the cost per kilogram. Cost per kilogram = Total costTotal quantity Cost per kilogram = 500 cedis50 kg Cost per kilogram = 10 cedis/kg The correct option is B. B. Gh¢10 Last free one today — make it count tomorrow, or type /upgrade for unlimited.