1) cost is Euro14 per CD
shopkeeper wants 25% profit
that means he/she wants to sell each CD for 25% more than the cost
how do you increase 14 so that it's 25% more than 14?
maybe multiply 14 by (1 + 25%) = 14 * 1.25 ??
1. A music store pays €14 for a CD. At what price must the CD be sold so the shopkeeper can make a profit of 25%?
2. What is the smallest number which can be divided evenly by 500, 600, 1000?
3. A map scale is 1cm to 30km. What is the real distance between two towns which are 1.5cm apart on the map?
4. The average age of four women is 25. If the average age of three of them is 24, what is the age of the other woman?
2 answers
4)
(W1 + W2 + W3 +W4)/4 = 25
(Wx + Wy + Wz)/3 = 24
so (W1 + W2 + W3 +W4) = 100
and (Wx + Wy + Wz) = 72
what's missing from the second sum?
(W1 + W2 + W3 +W4)/4 = 25
(Wx + Wy + Wz)/3 = 24
so (W1 + W2 + W3 +W4) = 100
and (Wx + Wy + Wz) = 72
what's missing from the second sum?