1. A man divides, R$ 90,000 among wife, son and daughter in the ratio= = =. Find the amount received by them. 2. A train 80m long crosses a platform 120m in length in 20 seconds. Find the speed of the train 'n km/hr. 3. Aman drives 180km from city A to city B in 4 hours 10 minutes and returns to the city Als 3 hours 20 minutes. Find the average speed of the whole journey. 4. If 24,8 m of a uniform iron rod weighs 82.15 kg, what will be the length of 26.5kg of the same rod? S. Simplify 40-63 + 3 of 7 - (-23 + 5) = 6 * 2 il (53+ 5) = [ 45-45-(25-35 - 1 6. The total weight of certain bags of rice is 650.16 kg. If each bag weighs 10-32 kg, find the number of bags. 7. A car covers a distance of 189– km in 4-hours. Find the distance covered in one hour 8. A cement company earns a profit of Rs. 8 per bag of white cement sold and a loss of Rs. 5 per bag of grey cement sold. What is the number of white cement bags it must sell to have neither profit nor less, if the number of grey cement bags sold is 64007 9. The ratio of the income to the expenditure of a family is 8:5. Find the savings, if the income is Rs 48,000.
Answers
Answer:
1) In ratio :
A is 8, so 8×5000 = 40000
B is 7, so 7×5000 = 35000
C is 3, so 3×5000 = 15000.
2) = 72 km/hr
3) 48 km/hr
4) x = 8m
5) 43
Step-by-step explanation:
1) Find one's value and then multiple with A,B,C’s ratio.”
First step is add all the ratio numbers 8+7+3 = 18.
Second step is 90,000 divide by 18.
@90000÷18 = 5000.
Then, after Division, we can say that
18 = 90000 and
1 = 5000.
In ratio :
A is 8, so 8×5000 = 40000
B is 7, so 7×5000 = 35000
C is 3, so 3×5000 = 15000.
2) Then speed in km/hr=20×18/5=72km/hr.
3) We are given that the distance between city A and city B is 180km
The man moves to city B from city A and then comes back to city A.
Let us now calculate the total distance travelled by a man by taking twice the distance from city A to city B.
That is, 2×180=360km
Now, we are also given that the time taken by a man from city A to city B is 4 hours 10 minutes and time taken from city B to city A is 3 hours 20 minutes.
The total time taken is the sum of the time taken on both journeys.
Hence, the total time taken is 4 hours 10 minutes + 3 hours 20 minutes = 7 hours 30 minutes
Now, convert the total time taken in hours, therefore, divide the minutes by 60.
7 hours 30 minutes = 7 + 3060hours⇒(7 + 0.5)hours⇒7.5hours
As it is known that speed = distancetime
Therefore, average speed can be calculated by dividing total distance covered by total time taken.
Thus, average speed is 3607.5=48km/hr
4) If 24.8m gives rise to 82.15 kg
Then 'x'm gives rise to 26.5kg
Then x=(26.5x24.8)/82.15
X=657.2/82.15
X=8m
5) according to BODMAS
Step-by-step explanation:
40-63÷21-(-23+5)÷6×2
40-63÷21-(-18)÷6×2
40-63÷21+18÷6×2
40-3+3×2
40-3+6
40+6-3
46-3
43 ans