Sparrow ball

On the sparrows ball were males and females. There were 170 sparrows. Males was 20 more than females. How many sparrow female was at a ball?

Result

b =  75

Solution: 170 = a+b
a = 20 + b

a+b = 170
a-b = 20

a = 95
b = 75

Calculated by our linear equations calculator.

Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...): Be the first to comment! To solve this verbal math problem are needed these knowledge from mathematics:

Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

Next similar math problems:

1. Bus On the 4-th stop take on 56 and take off 38 passengers. How many were added (write as positive number) or shrunk (write as negative number) the count of passengers?
2. Hotel The rooms in the mountain hotel are double and triple. Double rooms are 25 and triple are 17 more. How many rooms are there in this hotel?
3. Cages Honza had three cages (black, silver, gold) and three animals (guinea pig, rat and puppy). There was one animal in each cage. The golden cage stood to the left of the black cage. The silver cage stood on the right of the guinea pig cage. The rat was in the
4. Baking There are 28 bunches, and son ate 1/2, dad ate four bunches. How many of them remain on the baking dishes?
5. Apples 3 Julka has 5 apples more than Hugo and four apples less than Annie. Hugo has 17 apples. How many apples has Julka and how Annie?
6. Mom and dad Mom wants talk with dad 2.2 hours. But dad wants of 2 times more hours than mom ... How many hours wants dad talk with mom? ...
7. Mom and daughter Mom is 30 years older than the daughter. What is the age difference between them in 35 years?
8. Brick Brick weight before drying is 5.3 kg. After drying, the bricks is 1 kg lighter and after firing is 0.7 kg lighter than after drying. What is the weight of the brick after drying and firing?
9. Popsicles Francis went to buy ice lollies. If he buy 8 popsicles he missed 4 USD. When he buy 7 popsicles, got back 1 USD. How many USD was a popsicle?
10. No. 215 From the number 215 we can create a four-digit number that among its numbers manually type any other digit. Thus, we created two four-digit numbers whose difference is 120. What two four-digit numbers that might be?
11. Neighbor angle For 136° angle calculate size of adjacent angle on one side of a straight line.
12. What is missing (1000) What number is to add to get 1000?
13. If-then equation If 5x - 17 = -x + 7, then x =
14. Postal stamps Jano and Peter exchanged postal stamps. Jano gave Peter 32 stamps of the missile for 8 stamps with turtles. How good was Jano after this exchange (how many he has surplus in exchanged stamps)?
15. Six te 2 If 3t-7=5t, then 6t=
16. Eq1 Solve equation: 4(a-3)=3(2a-5)
17. Unknown number xyz Find the number that its triple is 24. Solve by equation.