Answer to Question #136521 in Algebra for Faith

Question

1.if four soft drinks cost R84,99.how much would you pay for three?
2. six identical drums of oil weigh 90kg in total.how much would 13,5 drums weigh?
3. A vendor in a shopping mall sells frozen yoghurt in 250g and 100g tubs.it costs R8,75 for 250g and R4,00 for 100g.which is the better buy?

Answer 1

1. Let's find the price of one drink. To do this, divide R84.99 by 4, we get that the price for one drink is R21.25. Then we multiply the resulting price by 3 and get that 3 drinks will cost R63.75.

2. Let's find out how much one drum will weigh. To do this, divide 90 kg by 6. We get that the weight of one drum is 15 kg. Next, the result is multiplied by 13.5. We get that 13.5 drums will weigh 202.5 kg.

3. In order to find out which tub is more profitable than 250 g or 100 g, we will find out how much two tubs of 250 g and 5 tubs of 100 g will cost, i.e. we will compare the value of 500 g of tubs. We will determine the price of two tubs of 250 g. To do this, we multiply R8.75 by 2. We get that two tubs of 250 g will cost R17.5. Then we find the price of 5 tubs of 100 g. To do this, multiply R4.00 by 5. we get that 5 tubs of 100 g will cost R20. We compare the results and find that it is more profitable to buy frozen yogurt in a tub of 250 g at the price of R8.75.