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Mrs Ali bought 15 apples and pears for $7.40. Each apple cost 40c and eachpear cost 20¢ more than an apple. How many apples did Mrs Ali buy? |
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Answer» <P>Answer: Mrs Ali bought 8 apples Step-by-step explanation: Apples & Pears: 15 Total Total PRICE: $7.40 1 Apple: 0.40 1 Pear: 0.60 a = apple p = pear Solve system of equation a + p = 15 .40a + .60P = 7.40 -.60(a+p) = -.60(15) = -.60a-.60p = -9 combine both equation .40a + .60p = 7.40 + -.60a-.60p = -9 = -.20a = -1.6 a = -1.6/-.20 a = 8 a = 8 p = 7 (note p/pears is not needed but to find p just plug in a=8 to the ORIGINAL equation and solve for p) Mrs Ali bought 8 apples |
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