Can you explain a more direct way to solve College Board Official Practice Test 9, Math Section 4 #19, than the College Board’s explanation? I seem to remember something about making a chart to solve mixture problems. Would that work here?

# Test 5 Section 4 #37 and 38

Can you please explain College Board Test 5 Section 4 #37 and 38? They all use one table.

# A marine aquarium has a small tank and a large tank, each containing only red and blue fish…

Here’s a problem from Khan Academy’s SAT practice section. Please explain this one for me.

A marine aquarium has a small tank and a large tank, each containing only red and blue fish. In each tank, the ratio of red fish to blue fish is 3 to 4. The ratio of fish in the large tank to fish in the small tank is 46 to 5. What is the ratio of blue fish in the small tank to red fish in the large tank?

# During a storm, the atmospheric pressure in a certain location fell at a constant rate of 3.4 millibars (mb) per hour over a 24-hour time period. Which of the following is closest to the total drop in atmospheric pressure, in millimeters of mercury (mm Hg), over the course of 5 hours during the 24-hour time period? (Note: 1,013 mb = 760 mm Hg) Can you help me solve this please? Thank you ❤️

If it’s falling at a constant rate during the period, then we can conclude that it fell (3.4 mb/hr)(5 hr) = 17 mb. Now we just need to convert mb to mm Hg, using the given scale. Solve that for x and you get roughly 12.8. from Tumblr https://ift.tt/2w1cbUe

# A bag contains mangoes that are either green or yellow…

Q) A bag contains mangoes that are either green or yellow. The ratio of green mangoes to yellow mangoes in the bag is 3 to 5. When two green mangoes are removed and ten yellow mangoes are added, the ratio becomes 2 to 5. How many green mangoes were originally in the bag?

# Test 4 Section 4 #35

Can you do test 4 section 4 number 35 please?

# Test 2 Section 3 # 18

How do you do Test 2 Section 3 Number 18?

# Whats the best and fastest way of doing Practise test 1, section 4, question 23?

Whats the best and fastest way of doing Practise test 1, section 4, question 23?

Would it be calculating the ratio of all the options and then comparing it to the Human Resources ratio?

Thanks!

# Test 6 #20 from the no calculator section

Test 6 #20 from the no calculator section

# Please answer #23 in test 2 section 4.

Please answer #23 in test 2 section 4.

# The circle graph above shows the percent of 4th graders at an elementary school who have the indicated numbers of pets in their homes…

The circle graph above shows the percent of 4th graders at an elementary school who have the indicated numbers of pets in their homes. If 68 of the 4th graders have at least one pet, how many have exactly two pets?

(A) 16

(B)17

(C)20

(D)33

(E)34

# At a certain camp, the counselor-to-camper ratio is 2 to 9. If the camp has 18 counselors, how many campers does it have?

at the certain camp, the counselor-to-camper ratio is 2 to 9. if the camp has 18 counselors, how many campers does it have

# A new high-tech transportation system is to be built connecting a city at sea level and a suburb 3,500 feet above sea level…

A new high-tech transportation system is to be built connecting a city at sea level and a suburb 3,500 feet above sea level. The maximum allowable grade is 3 percent, which means that the track for the new system can ascend no more than 3 feet for every 100 feet of horizontal length. What is the minimum whole number of feet of track needed for the new system?

A) 113,167 ft

B) 116,615 ft

C) 116,615 ft

D) 116,667 ft

E) 120,167 ft

# Are you a smooth operator? Prove it with this Numbers and Operations quiz.

How’s everyone else doing on this quiz?

# Weekend Challenge – Hoarders edition

Source: Married to the Sea. This started out as an Old MacDonald’s farm question. No wait, I thought to myself, not depressing enough. The prize this week: You’ll get the satisfaction of knowing that you probably solved this problem in less time than I spent staring at my computer screen trying to come up with a clever prize (more…)