A scientist has 400 units of a 6% phosphoric acid solution, and an unlimited supply of 12% phosphoric acid solution. How many units of the latter must she add to the former to produce a 10% phosphoric acid solution?

Question

Satt Academy · Accepted Answer

Let, x units of 12% acid needs to be mixed with.

According to question

x $\times$ 12% +400 $\times$ 6% = (400+x) $\times$ 10%

$= \frac{12 x}{100} + \frac{400 \times 6}{100} = \frac{(400 + x) \times 10 %}{100} = 12 x + 2400 = 4000 + 10 x [M u l t i p l y i n g b o t h s i d e s b y 100] = 2 x = 1600 ∴ x = \frac{1600}{2} = 800 A n s w e r : 800 u n i t e s o f 12 % a c i d n e e d s t o b e m i x e d .$

A scientist has 400 units of a 6% phosphoric acid solution, and an unlimited supply of 12% phosphoric acid solution. How many units of the latter must she add to the former to produce a 10% phosphoric acid solution?
(Mixture)

Question:
A scientist has 400 units of a 6% phosphoric acid solution, and an unlimited supply of 12% phosphoric acid solution. How many units of the latter must she add to the former to produce a 10% phosphoric acid solution?
(Mixture)

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Related Question

Promotion

A scientist has 400 units of a 6% phosphoric acid solution, and an unlimited supply of 12% phosphoric acid solution. How many units of the latter must she add to the former to produce a 10% phosphoric acid solution? (Mixture)

Question: A scientist has 400 units of a 6% phosphoric acid solution, and an unlimited supply of 12% phosphoric acid solution. How many units of the latter must she add to the former to produce a 10% phosphoric acid solution? (Mixture)

গণিত

Related Question

Promotion

A scientist has 400 units of a 6% phosphoric acid solution, and an unlimited supply of 12% phosphoric acid solution. How many units of the latter must she add to the former to produce a 10% phosphoric acid solution?
(Mixture)

Question:
A scientist has 400 units of a 6% phosphoric acid solution, and an unlimited supply of 12% phosphoric acid solution. How many units of the latter must she add to the former to produce a 10% phosphoric acid solution?
(Mixture)