To determine the gradient (slope) and the y-intercept of the line given by the equation $10y=3x+15$, we first need to rewrite the equation in the slope-intercept form, which is $y=mx+c$, where $m$ is the gradient and $c$ is the y-intercept.

Step-by-Step Calculation:

1. Rewrite the equation in slope-intercept form:

$$10y=3x+15$$

Divide both sides of the equation by 10 to solve for $y$:

$$y=\frac{3x+15}{10}=\frac{3}{10}x+\frac{15}{10}$$

Simplify:

$$y=0.3x+1.5$$

2. Identify the gradient and y-intercept:

- The gradient $m$ is the coefficient of $x$, which is $0.3$.
- The y-intercept $c$ is the constant term, which is $1.5$.


The correct answer is A. The gradient is 0.3 and the y-intercept is 1.5