Q1. Belinda had a sum of money. She spent 3/4 of it on a dress and 2 T-shirts. Each T-shirt cost 1/4 as much as the cost of the dress. She then had $47.30 left.
(a) What was the total amount Belinda spent?
(b) What was the cost of the dress?
Q2. A tin of paint weighs 2.75 kg when it is full. It weighs 1.4 kg when it is 1/4 filled with paint. What is the weight of the tin when it is 3/4 filled with paint?
Originally posted by kkhing:Q1. Belinda had a sum of money. She spent 3/4 of it on a dress and 2 T-shirts. Each T-shirt cost 1/4 as much as the cost of the dress. She then had $47.30 left.
(a) What was the total amount Belinda spent?
(b) What was the cost of the dress?
Q2. A tin of paint weighs 2.75 kg when it is full. It weighs 1.4 kg when it is 1/4 filled with paint. What is the weight of the tin when it is 3/4 filled with paint?
47.30 = 1 unit
Amount spent = 3 units = 47.3 X 3 = 141.90
1 T-shirt = 1/4 dress so 2 t-shirts = 1/2 dress
Cost of dress = 141.9 / (1+ 1/2 dress) = $94.6
3/4 paint weight = 2.75 - 1.4 = 1.35
1/4 paint weight = 1.35 / 3 = 0.45kg
Tin Can weight = 1.4 - 0.45 = 0.95kg
Weight of can with 3/4 paint = 0.95 + 1.35 = 2.3 kg