Thyqueenmary Thyqueenmary

22-04-2016
Mathematics

contestada

If in a rock collection 60% of the rocks are Quartz how many rocks are Quartz if there are 35 rocks?

Respuesta :

vanskikranski vanskikranski

22-04-2016

If 60% of the rocks are Quartz, you need to multiply the total number of rocks by 60% (this is the same as multiplying by 0.6 as 0.6=60%)
So 35 x 0.6 = 21
Therefore there are 21 quartz rocks in the collection.

Answer Link

Otras preguntas

Which expression is equivalent? 6(2x + 3) − 4(5x + 2) A) 8x + 10 B) 8x − 10 C) −8x + 10 D) −8x − 10

how could you separate a mixture of acetone and a-naphthol

evaluate the expression for the given value of the variable. |b| + b^3 ; b = -2, please show work!

A cookie factory uses 1/6 of a bag of flour in each batch of cookies. The factory used 1 1/2 bags of flour yesterday. How many batches of cookies did the factor

what analogy best represents the relationship between jobs and careers?

Can someone help me

Hospitals that routinely staff with 1:8 nurse-to-patient ratios experience five additional deaths per 1,000 patients than those staffing with 1:4 ratios (2002).

In what way are health skills similar to other partial skills you may have learned

Who are chronos and rheas great-grandchildren

What was the colonists' main objection to the British Parliament's policies on taxation? Question 25 options: The colonists thought Britain was taxing the wrong