Learning Task 3: Solve the given problems. Write your answers in your
N
notebook
1. If a notebook costs 5.25, how much is the cost of 6 notebooks?
2. A working student earns ? 25.50 per hour. How much does he earn in
4 hours? If he works 3 days a week, how much does he earn in a week?
3. Mrs. De Guzman's class travelled 3.8 miles to the first observatory. The
next closest observatory is 13 times far. How far is the second
observatory to the first?
4. A chocolate bar weighs 8.7 grams. Find the cost and the weight of 115
chocolate bars if each bar costs +30.2.
5. A kilogram of beef costs P 180.90. How much do 95 kilograms of beef
cost?
Answers
Answer:
1.cost of 6 notebook= 5.25x631.5
2.earnign of 4 hours= 25.50x4=102
earning of 24 hours=25.50x24=612
earning of 3 week =216x612=132,192
The answers are as follows:
- Given: Cost of one notebook = 5.25
Cost of 6 notebooks = 6*Cost of one notebook
Cost of 6 notebooks = 6*5.25 = 31.5
Therefore cost of 6 notebooks = 6.25
- Given: Earning of student per hour = 25.50
Earning in 4 hours = Earning of student per hour*4
Earning in 4 hours = 25.50*4 = 102
Therefore Earning in 4 hours = 102
Earning in one day = Earning of student per hour*24
Earning in one day = 25.50*24 = 612
Earning in 3 days in a week = Earning in one day * 3
Earning in 3 days in a week = 612 *3 = 1836
- Distance of first observatory = 3.8 miles
Distance of next observatory = Distance of first observatory*13
Distance of next observatory = 3.8*13 = 49.4 miles
Distance of next observatory is 49.4 miles
- Weight of one chocolate bar = 8.7 grams
Weight of 115 chocolate bars = 115*8.7 = 1000.5 grams
Cost of one chocolate bar = 30.2
Cost of 115 chocolate bars = 115*30.2 = 3473
Cost of 115 chocolate bars = 3473 and weight = 1000.5 grams
- Cost of one kilogram of beef = 180.90
Cost of 95 kilogram of beef = 95* 180.90 = 17185.5
Cost of 95 kg of beef = 17185.5